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-   -   Sony 6800w dismantling (https://www.radiobanter.com/shortwave/74675-sony-6800w-dismantling.html)

Pete KE9OA July 16th 05 08:49 AM

Sony 6800w dismantling
 
How do I dissamble this unit? I was able to remove the back panel, and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has some
unlock problems, and the only way I can get at them is to take the unit out
of the case. Also, does anybody on this group have any kind of service info
that they can scan and e-mail to me? I would be glad to pay for the effort.

Pete



Unrevealed Source July 16th 05 11:24 AM

1) You're on the wrong track taking the bottom screws out. Put them back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to pull
the screws out. Without the service manual, you might be able to figure out
which ones they are (two are inside the battery compartment lid, but the
others are harder to get to.)
3) Buy the service manual for $19.95 at www.manualzone.com/. If you own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has some
unlock problems, and the only way I can get at them is to take the unit

out
of the case. Also, does anybody on this group have any kind of service

info
that they can scan and e-mail to me? I would be glad to pay for the

effort.

Pete





Pete KE9OA July 16th 05 12:52 PM

I already checked that website.............it appears they only take PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel, but I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of work.
I believe that this synthesizer is a dual-loop hybrid vernier synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart today.
Hopefully, the top of the unit separates from the bottom; that is all I need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to figure
out
which ones they are (two are inside the battery compartment lid, but the
others are harder to get to.)
3) Buy the service manual for $19.95 at www.manualzone.com/. If you own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has some
unlock problems, and the only way I can get at them is to take the unit

out
of the case. Also, does anybody on this group have any kind of service

info
that they can scan and e-mail to me? I would be glad to pay for the

effort.

Pete







Pete KE9OA July 16th 05 01:38 PM

I did manage to get five of the screws out, but there is a hidden screw on
the right side of the front panel. The back panel has an illustration
depicting that the screw is just above the front end module, but it appears
to be hidden. Does anybody have any ideas?

Pete

"Pete KE9OA" wrote in message
...
I already checked that website.............it appears they only take
PayPal, so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel, but
I need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of
work.
I believe that this synthesizer is a dual-loop hybrid vernier synthesizer.
I just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart today.
Hopefully, the top of the unit separates from the bottom; that is all I
need to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to figure
out
which ones they are (two are inside the battery compartment lid, but the
others are harder to get to.)
3) Buy the service manual for $19.95 at www.manualzone.com/. If you own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble
to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has
some
unlock problems, and the only way I can get at them is to take the unit

out
of the case. Also, does anybody on this group have any kind of service

info
that they can scan and e-mail to me? I would be glad to pay for the

effort.

Pete









[email protected] July 16th 05 02:27 PM

On some kinds of thingys,there are decals (I have run into them
before,believe you me) that cover some screw heads.
cuhulin


Pete KE9OA July 16th 05 04:22 PM

I've seen that before. I'll give it another try. It can't be as bad as the
Nordmende Globetrotter that I just got through repairing!

Pete

wrote in message
...
On some kinds of thingys,there are decals (I have run into them
before,believe you me) that cover some screw heads.
cuhulin




BDK July 16th 05 04:22 PM

In article ,
says...
I already checked that website.............it appears they only take PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel, but I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of work.
I believe that this synthesizer is a dual-loop hybrid vernier synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart today.
Hopefully, the top of the unit separates from the bottom; that is all I need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to figure
out
which ones they are (two are inside the battery compartment lid, but the
others are harder to get to.)
3) Buy the service manual for $19.95 at
www.manualzone.com/. If you own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has some
unlock problems, and the only way I can get at them is to take the unit

out
of the case. Also, does anybody on this group have any kind of service

info
that they can scan and e-mail to me? I would be glad to pay for the

effort.

Pete








LOL, you think Paypal is sending those emails?

BDK

Pete KE9OA July 16th 05 06:15 PM

Of course not! Especially when I see that somebody from Nigeria and somebody
else from Bosnia is using my "supposed" account.
I guess they gave up on sending those "Greetings, I am Doctor Blah Blah
Blah" things that offer to let me launder their 5 million dollar
inheritance, if I will only give them my bank account number, routing
number, etc.
It looks like I lost out on that one. I better move much faster next time I
get one of those e-mails. What a good deal! The quick and easy way to file
bankruptcy. But wait................there's more!

Pete

"BDK" wrote in message
...
In article ,
says...
I already checked that website.............it appears they only take
PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a
PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel, but
I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of
work.
I believe that this synthesizer is a dual-loop hybrid vernier
synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart
today.
Hopefully, the top of the unit separates from the bottom; that is all I
need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them
back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to
figure
out
which ones they are (two are inside the battery compartment lid, but
the
others are harder to get to.)
3) Buy the service manual for $19.95 at
www.manualzone.com/. If you
own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble
to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and
I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has
some
unlock problems, and the only way I can get at them is to take the
unit
out
of the case. Also, does anybody on this group have any kind of service
info
that they can scan and e-mail to me? I would be glad to pay for the
effort.

Pete








LOL, you think Paypal is sending those emails?

BDK




Pete KE9OA July 16th 05 08:03 PM

It looks like I will need a service manual for this radio. I cleaned the
switches and it does work better, but the PLL is still in need of
adjustment.
On the ranges below 5MHz, the system goes out of lock most of the time. Same
thing when you tune above "900" on the tuning dial. I would surmise that
there is probably a VCO coil that needs adjustment, and that right now, the
system is set at the edge of its capture range. I'll let you folks know what
the problem is once I finish with the repair.
Oh, I found out the reason that I couldn't find that final
screw...........the documentation indicated that this screw was at a point
in the chassis that was 3 inches higher than it really was!

Pete

"Pete KE9OA" wrote in message
...
Of course not! Especially when I see that somebody from Nigeria and
somebody else from Bosnia is using my "supposed" account.
I guess they gave up on sending those "Greetings, I am Doctor Blah Blah
Blah" things that offer to let me launder their 5 million dollar
inheritance, if I will only give them my bank account number, routing
number, etc.
It looks like I lost out on that one. I better move much faster next time
I get one of those e-mails. What a good deal! The quick and easy way to
file bankruptcy. But wait................there's more!

Pete

"BDK" wrote in message
...
In article ,
says...
I already checked that website.............it appears they only take
PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a
PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel,
but I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of
work.
I believe that this synthesizer is a dual-loop hybrid vernier
synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart
today.
Hopefully, the top of the unit separates from the bottom; that is all I
need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them
back
in.
2) There are six screws holding the front panel on. You'll need a
long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to
figure
out
which ones they are (two are inside the battery compartment lid, but
the
others are harder to get to.)
3) Buy the service manual for $19.95 at
www.manualzone.com/. If you
own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the
trouble to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel,
and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has
some
unlock problems, and the only way I can get at them is to take the
unit
out
of the case. Also, does anybody on this group have any kind of
service
info
that they can scan and e-mail to me? I would be glad to pay for the
effort.

Pete








LOL, you think Paypal is sending those emails?

BDK






Pete KE9OA July 16th 05 09:22 PM

I figured out the problem with the radio. I needed to clean the 1MHz tuning
ranges. The interesting thing is that these ranges are not controlled by a
switch, but by an indexing mechanism that tunes a miniature multi-gang
tuning capacitor in what appears to be a form of the Wadley Loop system that
the Yaesu FRG-100 uses.
This is a form of a hybrid synthesizer that uses a 1MHz comb generator as
the reference. When you are changing the 1MHz tuning steps, you are
essentially tuning a free-running oscillator. When you tune this oscillator
to within the capture range of the PLL, this oscillator locks on to one of
the harmonics of the 1MHz comb generator.
I still need to figure out why the system goes out of lock at the extreme
upper end of the VFO tuning range, but I think that the amplitude of the VFO
is starting to droop at this end.
I think that the RF output trimmer and padder need to peaked while watching
the output on an RF Voltmeter.
A piece of cake....................I just don't know how big of a piece of
cake it will be!

Pete

"Pete KE9OA" wrote in message
...
It looks like I will need a service manual for this radio. I cleaned the
switches and it does work better, but the PLL is still in need of
adjustment.
On the ranges below 5MHz, the system goes out of lock most of the time.
Same thing when you tune above "900" on the tuning dial. I would surmise
that there is probably a VCO coil that needs adjustment, and that right
now, the system is set at the edge of its capture range. I'll let you
folks know what the problem is once I finish with the repair.
Oh, I found out the reason that I couldn't find that final
screw...........the documentation indicated that this screw was at a point
in the chassis that was 3 inches higher than it really was!

Pete

"Pete KE9OA" wrote in message
...
Of course not! Especially when I see that somebody from Nigeria and
somebody else from Bosnia is using my "supposed" account.
I guess they gave up on sending those "Greetings, I am Doctor Blah Blah
Blah" things that offer to let me launder their 5 million dollar
inheritance, if I will only give them my bank account number, routing
number, etc.
It looks like I lost out on that one. I better move much faster next time
I get one of those e-mails. What a good deal! The quick and easy way to
file bankruptcy. But wait................there's more!

Pete

"BDK" wrote in message
...
In article ,
says...
I already checked that website.............it appears they only take
PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a
PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel,
but I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of
work.
I believe that this synthesizer is a dual-loop hybrid vernier
synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart
today.
Hopefully, the top of the unit separates from the bottom; that is all I
need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them
back
in.
2) There are six screws holding the front panel on. You'll need a
long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip
to
pull
the screws out. Without the service manual, you might be able to
figure
out
which ones they are (two are inside the battery compartment lid, but
the
others are harder to get to.)
3) Buy the service manual for $19.95 at
www.manualzone.com/. If you
own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the
trouble to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel,
and I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has
some
unlock problems, and the only way I can get at them is to take the
unit
out
of the case. Also, does anybody on this group have any kind of
service
info
that they can scan and e-mail to me? I would be glad to pay for the
effort.

Pete








LOL, you think Paypal is sending those emails?

BDK








BDK July 17th 05 02:34 AM

In article ,
says...
Of course not! Especially when I see that somebody from Nigeria and somebody
else from Bosnia is using my "supposed" account.
I guess they gave up on sending those "Greetings, I am Doctor Blah Blah
Blah" things that offer to let me launder their 5 million dollar
inheritance, if I will only give them my bank account number, routing
number, etc.
It looks like I lost out on that one. I better move much faster next time I
get one of those e-mails. What a good deal! The quick and easy way to file
bankruptcy. But wait................there's more!

Pete

"BDK" wrote in message
...
In article ,
says...
I already checked that website.............it appears they only take
PayPal,
so that option is out. I get so many fraudelant e-mails from PayPal
informing me about suspicious activity on my account. I don't have a
PayPal
account, so I will let it rest there.
The only other source is A.G. Tannenbaum, but they don't seem to answer
their phones.
Any other sources? Also, I did see those screws for the front panel, but
I
need to remove the whole assembly so I can work on the synthesizer.
It seems that the LO output from the VFO droops at the high end of the
tuning range. When I tune up above "800" on the mechanical dial, the
synthesizer goes out of lock. This is on all bands, when they kind of
work.
I believe that this synthesizer is a dual-loop hybrid vernier
synthesizer. I
just need to find out where the sampling point for the VFO is.
I do have a long Phillips head screwdriver, so I will pull it apart
today.
Hopefully, the top of the unit separates from the bottom; that is all I
need
to pull off.
Thanks for the info!

Pete

"Unrevealed Source" wrote in message
...
1) You're on the wrong track taking the bottom screws out. Put them
back
in.
2) There are six screws holding the front panel on. You'll need a long
Philips screwdriver, 8" or more shaft, preferably with magnetic tip to
pull
the screws out. Without the service manual, you might be able to
figure
out
which ones they are (two are inside the battery compartment lid, but
the
others are harder to get to.)
3) Buy the service manual for $19.95 at
www.manualzone.com/. If you
own
this radio, you should have one.

This is a very service-hostile radio. If you do go through the trouble
to
take the front panel off, use that time to replace all of the bulbs.


"Pete KE9OA" wrote in message
...
How do I dissamble this unit? I was able to remove the back panel, and
I
have removed the screws from the bottom of the unit.
What I need to do is clean the frequency range switches. The PLL has
some
unlock problems, and the only way I can get at them is to take the
unit
out
of the case. Also, does anybody on this group have any kind of service
info
that they can scan and e-mail to me? I would be glad to pay for the
effort.

Pete








LOL, you think Paypal is sending those emails?

BDK





Good!

I do tech support and there ARE people who think these things are legit
messages! We had a woman try to open and then send a complaint to a
virus laden message from.."Tech support" every time a new copy came even
after I TOLD HER it was a virus, and to delete it, on two previous
calls! The first and second viruses were detected by Norton or whatever
and she was ok, but the last one nailed her PC and totally trashed it.

She calls again, all shakey, and I ask her why she tried to open it,
after I had told her we would NEVER, EVER send an attachment without
talking to her first, ever, period. I told her that an attachment flat
out made the message bogus, period, twice before. Just delete it. Then
she says, and I still can't believe she said this, "Oh GOD, I thought
you just meant for that month it was a bogus message if it had an
attachment!" Huh?? "No ma'am, ever, period, always.."

This same woman replied to one of the bank messages asking for her
account info. Sigh..


What does she do for a living??

College Professor, I verified it!

No wonder so many of my friend's kids are so scary dumb..

BDK

Pete KE9OA July 17th 05 06:10 AM

It is pretty uncanny how some folks can get tricked pretty easily. Whenever
I get those e-mails, I just use the "block sender" function and get rid of
them. If I get a string of those e-mails, I go to my provider's website and
report them as spam.
I do use Internet Explorer, but I disable active scripting, install on
demand, etc. If I do need to go to a website that uses Javascripting, I use
Mozilla Firefox 0.8. I did try the newest version of Firefox, but I
preferred the earlier version.
Now, about the radio....................I've got the PLL locking on all
ranges as long as I keep the VFO tuned below its highest frequency.
Too bad A.G. Tannebaum is closed on Fridays; otherwise, I would have ordered
the service manual. I don't think it will be more than another hour's work
to get the radio up and running.
An interesting thing about this radio...it uses a low priced Murata CFU-455J
(4-element) filter for the narrow bandwidth, while the wide bandwidth seems
to be a Toko transformer that has the ceramic filter integrated into the
structure. If the radio wasn't such a difficult unit to work on, I would
replace that filter with an 11-element unit such as a CFR455.
The radio is definite in the "just above toy" class, but it is a very nice
toy! It will be a keeper.

Pete

Good!

I do tech support and there ARE people who think these things are legit
messages! We had a woman try to open and then send a complaint to a
virus laden message from.."Tech support" every time a new copy came even
after I TOLD HER it was a virus, and to delete it, on two previous
calls! The first and second viruses were detected by Norton or whatever
and she was ok, but the last one nailed her PC and totally trashed it.

She calls again, all shakey, and I ask her why she tried to open it,
after I had told her we would NEVER, EVER send an attachment without
talking to her first, ever, period. I told her that an attachment flat
out made the message bogus, period, twice before. Just delete it. Then
she says, and I still can't believe she said this, "Oh GOD, I thought
you just meant for that month it was a bogus message if it had an
attachment!" Huh?? "No ma'am, ever, period, always.."

This same woman replied to one of the bank messages asking for her
account info. Sigh..


What does she do for a living??

College Professor, I verified it!

No wonder so many of my friend's kids are so scary dumb..

BDK




[email protected] July 17th 05 07:11 AM

All of them wimmins are gullible to computer spam and computers
viruses.You would think they have at least half a brain.But there is
nothing between their ears but peckers.
cuhulin


BDK July 17th 05 02:40 PM

In article ,
says...
All of them wimmins are gullible to computer spam and computers
viruses.You would think they have at least half a brain.But there is
nothing between their ears but peckers.
cuhulin




Nah, just as many guys fall for it, she's just the only one I know of
that fell for the messages and the credit card stuff.

BDK

mike maghakian July 18th 05 04:26 AM

sounds like you have the white version, it is not as good as the orange
version starting with serial number 30,000

it is one of the most sensitive portables you will ever see.
I did a run off last year (or two ago) and published the results here and
they were amazing. the sony had a clear signal when other famous receivers
had mud !




"Pete KE9OA" wrote in message
...
It is pretty uncanny how some folks can get tricked pretty easily.
Whenever I get those e-mails, I just use the "block sender" function and
get rid of them. If I get a string of those e-mails, I go to my provider's
website and report them as spam.
I do use Internet Explorer, but I disable active scripting, install on
demand, etc. If I do need to go to a website that uses Javascripting, I
use Mozilla Firefox 0.8. I did try the newest version of Firefox, but I
preferred the earlier version.
Now, about the radio....................I've got the PLL locking on all
ranges as long as I keep the VFO tuned below its highest frequency.
Too bad A.G. Tannebaum is closed on Fridays; otherwise, I would have
ordered the service manual. I don't think it will be more than another
hour's work to get the radio up and running.
An interesting thing about this radio...it uses a low priced Murata
CFU-455J (4-element) filter for the narrow bandwidth, while the wide
bandwidth seems to be a Toko transformer that has the ceramic filter
integrated into the structure. If the radio wasn't such a difficult unit
to work on, I would replace that filter with an 11-element unit such as a
CFR455.
The radio is definite in the "just above toy" class, but it is a very nice
toy! It will be a keeper.

Pete

Good!

I do tech support and there ARE people who think these things are legit
messages! We had a woman try to open and then send a complaint to a
virus laden message from.."Tech support" every time a new copy came even
after I TOLD HER it was a virus, and to delete it, on two previous
calls! The first and second viruses were detected by Norton or whatever
and she was ok, but the last one nailed her PC and totally trashed it.

She calls again, all shakey, and I ask her why she tried to open it,
after I had told her we would NEVER, EVER send an attachment without
talking to her first, ever, period. I told her that an attachment flat
out made the message bogus, period, twice before. Just delete it. Then
she says, and I still can't believe she said this, "Oh GOD, I thought
you just meant for that month it was a bogus message if it had an
attachment!" Huh?? "No ma'am, ever, period, always.."

This same woman replied to one of the bank messages asking for her
account info. Sigh..


What does she do for a living??

College Professor, I verified it!

No wonder so many of my friend's kids are so scary dumb..

BDK






mike maghakian July 18th 05 04:40 AM

I should point out all were used as portables on whip and battery power



"mike maghakian" wrote in message
...
sounds like you have the white version, it is not as good as the orange
version starting with serial number 30,000

it is one of the most sensitive portables you will ever see.
I did a run off last year (or two ago) and published the results here and
they were amazing. the sony had a clear signal when other famous receivers
had mud !




"Pete KE9OA" wrote in message
...
It is pretty uncanny how some folks can get tricked pretty easily.
Whenever I get those e-mails, I just use the "block sender" function and
get rid of them. If I get a string of those e-mails, I go to my
provider's website and report them as spam.
I do use Internet Explorer, but I disable active scripting, install on
demand, etc. If I do need to go to a website that uses Javascripting, I
use Mozilla Firefox 0.8. I did try the newest version of Firefox, but I
preferred the earlier version.
Now, about the radio....................I've got the PLL locking on all
ranges as long as I keep the VFO tuned below its highest frequency.
Too bad A.G. Tannebaum is closed on Fridays; otherwise, I would have
ordered the service manual. I don't think it will be more than another
hour's work to get the radio up and running.
An interesting thing about this radio...it uses a low priced Murata
CFU-455J (4-element) filter for the narrow bandwidth, while the wide
bandwidth seems to be a Toko transformer that has the ceramic filter
integrated into the structure. If the radio wasn't such a difficult unit
to work on, I would replace that filter with an 11-element unit such as a
CFR455.
The radio is definite in the "just above toy" class, but it is a very
nice toy! It will be a keeper.

Pete

Good!

I do tech support and there ARE people who think these things are legit
messages! We had a woman try to open and then send a complaint to a
virus laden message from.."Tech support" every time a new copy came even
after I TOLD HER it was a virus, and to delete it, on two previous
calls! The first and second viruses were detected by Norton or whatever
and she was ok, but the last one nailed her PC and totally trashed it.

She calls again, all shakey, and I ask her why she tried to open it,
after I had told her we would NEVER, EVER send an attachment without
talking to her first, ever, period. I told her that an attachment flat
out made the message bogus, period, twice before. Just delete it. Then
she says, and I still can't believe she said this, "Oh GOD, I thought
you just meant for that month it was a bogus message if it had an
attachment!" Huh?? "No ma'am, ever, period, always.."

This same woman replied to one of the bank messages asking for her
account info. Sigh..


What does she do for a living??

College Professor, I verified it!

No wonder so many of my friend's kids are so scary dumb..

BDK








Pete KE9OA July 18th 05 05:53 AM

I do have the white version...........I also have a couple of filters that I
can throw in, but I will keep it original. You never know who will want it
in the future.
It will be nice, once I get that final wrinkle worked out of it.

Pete

"mike maghakian" wrote in message
...
sounds like you have the white version, it is not as good as the orange
version starting with serial number 30,000

it is one of the most sensitive portables you will ever see.
I did a run off last year (or two ago) and published the results here and
they were amazing. the sony had a clear signal when other famous receivers
had mud !




"Pete KE9OA" wrote in message
...
It is pretty uncanny how some folks can get tricked pretty easily.
Whenever I get those e-mails, I just use the "block sender" function and
get rid of them. If I get a string of those e-mails, I go to my
provider's website and report them as spam.
I do use Internet Explorer, but I disable active scripting, install on
demand, etc. If I do need to go to a website that uses Javascripting, I
use Mozilla Firefox 0.8. I did try the newest version of Firefox, but I
preferred the earlier version.
Now, about the radio....................I've got the PLL locking on all
ranges as long as I keep the VFO tuned below its highest frequency.
Too bad A.G. Tannebaum is closed on Fridays; otherwise, I would have
ordered the service manual. I don't think it will be more than another
hour's work to get the radio up and running.
An interesting thing about this radio...it uses a low priced Murata
CFU-455J (4-element) filter for the narrow bandwidth, while the wide
bandwidth seems to be a Toko transformer that has the ceramic filter
integrated into the structure. If the radio wasn't such a difficult unit
to work on, I would replace that filter with an 11-element unit such as a
CFR455.
The radio is definite in the "just above toy" class, but it is a very
nice toy! It will be a keeper.

Pete

Good!

I do tech support and there ARE people who think these things are legit
messages! We had a woman try to open and then send a complaint to a
virus laden message from.."Tech support" every time a new copy came even
after I TOLD HER it was a virus, and to delete it, on two previous
calls! The first and second viruses were detected by Norton or whatever
and she was ok, but the last one nailed her PC and totally trashed it.

She calls again, all shakey, and I ask her why she tried to open it,
after I had told her we would NEVER, EVER send an attachment without
talking to her first, ever, period. I told her that an attachment flat
out made the message bogus, period, twice before. Just delete it. Then
she says, and I still can't believe she said this, "Oh GOD, I thought
you just meant for that month it was a bogus message if it had an
attachment!" Huh?? "No ma'am, ever, period, always.."

This same woman replied to one of the bank messages asking for her
account info. Sigh..


What does she do for a living??

College Professor, I verified it!

No wonder so many of my friend's kids are so scary dumb..

BDK








Pete KE9OA July 18th 05 07:07 PM

I received the service manual. Now, on to the repair.............

Pete

"BDK" wrote in message
...
In article ,
says...
All of them wimmins are gullible to computer spam and computers
viruses.You would think they have at least half a brain.But there is
nothing between their ears but peckers.
cuhulin




Nah, just as many guys fall for it, she's just the only one I know of
that fell for the messages and the credit card stuff.

BDK




Pete KE9OA July 19th 05 02:10 AM

I found the problem with the radio. TC8, the trimmer capacitor for the low
end VCO range was cracked and wouldn't tune.
I looked at the parts list and all that was given was a Sony part
number.......no value in pF.
What a useless manual! At least it was only 25 dollars. If I knew what
value this cap was supposed to be, I would throw in a microwave trimmer
cap.....that is, if I could get all of that plastic for the bandswitching
mechanism out of the way.

Pete

"Pete KE9OA" wrote in message
...
I received the service manual. Now, on to the repair.............

Pete

"BDK" wrote in message
...
In article ,
says...
All of them wimmins are gullible to computer spam and computers
viruses.You would think they have at least half a brain.But there is
nothing between their ears but peckers.
cuhulin




Nah, just as many guys fall for it, she's just the only one I know of
that fell for the messages and the credit card stuff.

BDK






C.R. Kuijer July 19th 05 06:58 PM

Are you sure?
Pse check the amplitude on both inputs of the PLL circuit.
In both cases when locked and when lock is lost.
About 50% of the 2SC930 in this radio will have 50% reduced hFE.


Pete KE9OA July 20th 05 09:54 AM

Thank you.......I appreciate the info. It is interesting that semiconductors
would degrade in that manner, unless they were being run near their design
limits. If this is the case, the parameters were not derated properly.
I ran into the same thing with the Lowe receivers. They are using a 4569 to
divide the uP clock down to the BFO injection frequencies. Every so often,
these chips fail when brought up to operating temperature. Aside from the
dense plated through holes, these radios aren't nearly as bad to service as
that 6800 is. Anyway, it did turn out that the trimmer was indeed cracked. I
have repaired the unit and it is going back to the owner. It was the most
incredible nightmare to repair, but I was able to fix it.
The fellow that I made the deal with is giving me a Grundig 3400 as a
consolation prize. That radio is a little bit bigger than what I would
normally use, but it is good trading material.

Pete

"C.R. Kuijer" wrote in message
...
Are you sure?
Pse check the amplitude on both inputs of the PLL circuit.
In both cases when locked and when lock is lost.
About 50% of the 2SC930 in this radio will have 50% reduced hFE.




Luddite July 21st 05 09:01 PM

Pete KE9OA wrote:
I found the problem with the radio. TC8, the trimmer capacitor for the low
end VCO range was cracked and wouldn't tune.


I've seen that before.. cracked coils and trimmers are the signs
of a twirler,someone with tools but little skills with regard to
rf alignment. was the trimmer accessable before dismantling?


I looked at the parts list and all that was given was a Sony part
number.......no value in pF.
What a useless manual! At least it was only 25 dollars. If I knew what
value this cap was supposed to be, I would throw in a microwave trimmer
cap.....that is, if I could get all of that plastic for the bandswitching
mechanism out of the way.


Pete


"Pete KE9OA" wrote in message
...
I received the service manual. Now, on to the repair.............

Pete

"BDK" wrote in message
...
In article ,
says...
All of them wimmins are gullible to computer spam and computers
viruses.You would think they have at least half a brain.But there is
nothing between their ears but peckers.
cuhulin




Nah, just as many guys fall for it, she's just the only one I know of
that fell for the messages and the credit card stuff.

BDK






Pete KE9OA July 21st 05 10:44 PM



I've seen that before.. cracked coils and trimmers are the signs
of a twirler,someone with tools but little skills with regard to
rf alignment. was the trimmer accessable before dismantling?


The trimmer is only accessable once you remove the chassis from the cabinet.
It wasn't a matter of somebody destroying it..it didn't need any help. It
just fell apart over the years. I did replace the trimmer, and the alignment
notes stated that an external frequency counter could be used if the radio's
digital display was defective. Of course, the internal display wasn't
defective, but Sony's alignment notes are utterly useless. They tell you to
disable the high frequency PLL.......once you do this, the system goes out
of lock and the internal display shows what appears to be the preset
frequency.
Ok..............I decided to use an external frequency counter. The only
problem here is that the useless service manual doesn't show where to hook
up the counter.
The radio went back to its owner, and a Grundig 3400 was traded to me
instead. I am working on the Grundig unit now. I just got through cleaning
the I.F. bandwidth switch and adjusting the indexing mechanism for the SW
bands.
One thing I can say after comparing the innards to my Grundig
TR-6001.....the mechanical construction of the indexing mechanism on the
TR-6001 is much better than the 3400. Instead of using these leaves sticking
out from each of the band range modules the way it is done on the 3400, the
6001 has either gold plated or brass rivets that make contact with the leaf
springs instead.
A much more reliable radio.......I think that the 6000 series was the best
of their whole model line, although the 3400 was still made in Germany, it
still used ERO polypropolene audio capacitors, and it still used a
Variometer that was mechanically coupled to the main 2-gang tuning capacitor
to add that extra 3rd gand, so it wasn't completely without its good points.
Once I finish it up, I will play with it for awhile, and then trade it off.

Pete




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