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In message , Kurt
writes "helmsman" schreef in bericht .. . "Kurt" wrote: Hello , I have troubles with my Kenwood TS-450-SAT . When i power on the transceiver i get a cw code and in stead of the frequency i get dots on the screen . Also i can't receive or transmit . Anyone know this problem ? Can't find this problem in the manual . Many thanks , Kurt What is the sound you hear in code - what doe's it say?? It say UL . Unlocked? As in PLL Just a guess Trev G3ZYY -- Trevor Day |
In article , Kurt wrote:
It say UL . Your master Phase Locked Loop has become unlocked. It would be good to get it serviced. If you have a service manual and an ACCURATE frequency counter, you probably could tweak it by yourself. Geoff. -- Geoffrey S. Mendelson 972-54-608-069 Icq/AIM Uin: 2661079 MSN IM: (Not for email) |
In article , Kurt wrote:
It say UL . Your master Phase Locked Loop has become unlocked. It would be good to get it serviced. If you have a service manual and an ACCURATE frequency counter, you probably could tweak it by yourself. Geoff. -- Geoffrey S. Mendelson 972-54-608-069 Icq/AIM Uin: 2661079 MSN IM: (Not for email) |
"Trevor Day" schreef in bericht
... In message , Kurt writes "helmsman" schreef in bericht .. . "Kurt" wrote: Hello , I have troubles with my Kenwood TS-450-SAT . When i power on the transceiver i get a cw code and in stead of the frequency i get dots on the screen .. Also i can't receive or transmit . Anyone know this problem ? Can't find this problem in the manual . Many thanks , Kurt What is the sound you hear in code - what doe's it say?? It say UL . Unlocked? As in PLL Just a guess Trev G3ZYY Yep , i thing that's the problem . |
"Trevor Day" schreef in bericht
... In message , Kurt writes "helmsman" schreef in bericht .. . "Kurt" wrote: Hello , I have troubles with my Kenwood TS-450-SAT . When i power on the transceiver i get a cw code and in stead of the frequency i get dots on the screen .. Also i can't receive or transmit . Anyone know this problem ? Can't find this problem in the manual . Many thanks , Kurt What is the sound you hear in code - what doe's it say?? It say UL . Unlocked? As in PLL Just a guess Trev G3ZYY Yep , i thing that's the problem . |
Yours is simple. Some of the R-5000's have the same potting compound in a
VCO as the 440's. By keeping it on all the time you are keeping it dried out and it will work until some of the components corrode in two. If you turn it off the crud absorbs moisture and it won't work. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Bob" wrote in message om... Kurt: I had gone on holidays for about 3 weeks and disconnected antenna and power. When I powered it up all I got was a line of dots and no audio. I called a few dealers but none were familiar with the problem. Next day I turned it on and I got audio for about one minute but as soon as I turned the volume up more than half way the dots reappeared and the audio was dead. Another day went by and I tried again. This time the radio stayed on and would work normally but an increase in volume knocked it out again. On the third day it worked normally and has ever since. I do not unplug it except briefly to move it from one spot in the house to another. I have no idea why this glitch happened. Hope yours responds as easily. Regards, Bob Kurt" wrote in message ... "Bob" schreef in bericht om... Has the radio been sitting unplugged for a long period? If so , plug it in for a few days and see if that will bring it back to life. I had a similar problem on my R-5000 and that was the fix. No further problems after 7 or 8 years. Regards Bob Hi Bob , What do you mean with a long period ? I didn't used the transceiver for about 1 month . Regards , Kurt |
Yours is simple. Some of the R-5000's have the same potting compound in a
VCO as the 440's. By keeping it on all the time you are keeping it dried out and it will work until some of the components corrode in two. If you turn it off the crud absorbs moisture and it won't work. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (local) "Bob" wrote in message om... Kurt: I had gone on holidays for about 3 weeks and disconnected antenna and power. When I powered it up all I got was a line of dots and no audio. I called a few dealers but none were familiar with the problem. Next day I turned it on and I got audio for about one minute but as soon as I turned the volume up more than half way the dots reappeared and the audio was dead. Another day went by and I tried again. This time the radio stayed on and would work normally but an increase in volume knocked it out again. On the third day it worked normally and has ever since. I do not unplug it except briefly to move it from one spot in the house to another. I have no idea why this glitch happened. Hope yours responds as easily. Regards, Bob Kurt" wrote in message ... "Bob" schreef in bericht om... Has the radio been sitting unplugged for a long period? If so , plug it in for a few days and see if that will bring it back to life. I had a similar problem on my R-5000 and that was the fix. No further problems after 7 or 8 years. Regards Bob Hi Bob , What do you mean with a long period ? I didn't used the transceiver for about 1 month . Regards , Kurt |
Bob wrote:
Kurt: I had gone on holidays for about 3 weeks and disconnected antenna and power. When I powered it up all I got was a line of dots and no audio. I called a few dealers but none were familiar with the problem. Next day I turned it on and I got audio for about one minute but as soon as I turned the volume up more than half way the dots reappeared and the audio was dead. Another day went by and I tried again. This time the radio stayed on and would work normally but an increase in volume knocked it out again. On the third day it worked normally and has ever since. I do not unplug it except briefly to move it from one spot in the house to another. I have no idea why this glitch happened. Hope yours responds as easily. Regards, Bob At a guess. It could be condensation which has dried out when you return home and restart the central heating ect. -- John |
Bob wrote:
Kurt: I had gone on holidays for about 3 weeks and disconnected antenna and power. When I powered it up all I got was a line of dots and no audio. I called a few dealers but none were familiar with the problem. Next day I turned it on and I got audio for about one minute but as soon as I turned the volume up more than half way the dots reappeared and the audio was dead. Another day went by and I tried again. This time the radio stayed on and would work normally but an increase in volume knocked it out again. On the third day it worked normally and has ever since. I do not unplug it except briefly to move it from one spot in the house to another. I have no idea why this glitch happened. Hope yours responds as easily. Regards, Bob At a guess. It could be condensation which has dried out when you return home and restart the central heating ect. -- John |
It's a common problem with the 440 not the 450 or the 430, they have none of
the potting compound. -- Clif Holland, KA5IPF AVVid Authorized Kenwood and Icom Service Center 816 W Shady Grove Rd Irving, TX 75060 www.avvid.com 1-800-214-5779 972-870-0630 (Local) "MattD.." wrote in message ... On Sunday 25 January 2004 9:52 pm, taking a break from trying to find a single navel in a bag of navel oranges, Ged wrote: A correct guess. I don't know the internal circuitry of the 450S but I had the same problem with my TS850s. That was caused by a faulty DDS chip. There is a common fault with the TS-4xx series of radios to do with the "goop" they cover the VCO section with. It takes on moisture and becomes slightly conductive after a while. The fix is usually to _carefully_ remove whatever the mess is that they apply from around the VCO components and it cures the fault. The big giveaway here is that the set works properly when it warms up, occasionally reverting to dots and UL for no good reason. Indications are exactly this. Row of dots in the display, UL sent in Morse to indicate PLL out of lock and no RX/TX. More common in TS-440s but it has been reported in 450s as well. -- MattD.. |
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