anyone seen a surface mount part only markings on it are d k 9 z.it's on a kenwood handheld tranceiver of mine which has burnt out.would appreciate any info?
many thanks

Is it a plastic bodied component? Does it have one terminal at each end?
If yes, I'm guessing it's a diode.

-Joe


In article ,
confused wrote:

anyone seen a surface mount part only markings on it are d k 9 z.it's on
a kenwood handheld tranceiver of mine which has burnt out.would
appreciate any info?
many thanks

hi joe thanks for your response.it has 3 pins on one side and on thicker pin like a small heatsink looks like this http://images.google.co.uk/imgres?im...icial%26sa%3DG
i'd appreciate any help on where to get another or an equivalant.i've looked through shed loads of smt code books online cant find same code.i've tried contacting kenwood????

thankyou

Ahh, so its a transistor

Do you have a schematic? Is there another transistor with the same
markings?

A lot of times transistors are pretty generic and you can throw in "any old
thing". If that is the case, you should be able to tell from the schematic.
If not, and you have another, perhaps someone has a semiconductor analyzer
and can measure the parameters of a good one, and then you can figure a
replacement based on the parameters.

Of course, you would hope that Kenwood would be anxious to help

...

"confused" wrote in message
...

Joe LeKostaj;644551 Wrote:
Is it a plastic bodied component? Does it have one terminal at each end?

If yes, I'm guessing it's a diode.

-Joe


In article ,
confused wrote:
-
anyone seen a surface mount part only markings on it are d k 9 z.it's
on
a kenwood handheld tranceiver of mine which has burnt out.would
appreciate any info?
many thanks-

hi joe thanks for your response.it has 3 pins on one side and on
thicker pin like a small heatsink looks like this
http://tinyurl.com/5ltz2j
i'd appreciate any help on where to get another or an equivalant.i've
looked through shed loads of smt code books online cant find same
code.i've tried contacting kenwood????

thankyou




--
confused

In article ,
confused wrote:

hi joe thanks for your response.it has 3 pins on one side and on
thicker pin like a small heatsink looks like this
http://tinyurl.com/5ltz2j
i'd appreciate any help on where to get another or an equivalant.i've
looked through shed loads of smt code books online cant find same
code.i've tried contacting kenwood????

thankyou

It could be a transistor as the other poster mentioned, but it could
also be a voltage regulator IC. Your best bet would be to obtain a
schematic and/or parts location diagram for your radio to help ID the
component. Then your next stop would be Digi-Key or Mouser to look for a
replacement.

Also, try to determine what caused the part to fail before installing
the new one so it doesn't meet the same fate.

-Joe

Joe LeKostaj wrote:
In article ,
confused wrote:
hi joe thanks for your response.it has 3 pins on one side and on
thicker pin like a small heatsink looks like this
http://tinyurl.com/5ltz2j
i'd appreciate any help on where to get another or an equivalant.i've
looked through shed loads of smt code books online cant find same
code.i've tried contacting kenwood????

thankyou

It could be a transistor as the other poster mentioned, but it could
also be a voltage regulator IC. Your best bet would be to obtain a
schematic and/or parts location diagram for your radio to help ID the
component. Then your next stop would be Digi-Key or Mouser to look for a
replacement.

Also, try to determine what caused the part to fail before installing
the new one so it doesn't meet the same fate.

-Joe
========================================
The OP did not mention the handheld radio model ,other than it is from
Kenwood. An instruction manual with circuit diagramme(s) of the
relevant radio can highly likely be found at : www.mods.dk

Frank GM0CSZ / KN6WH

hi,
thanks to all responders .there are three on the same board.the model is a th-26 handheld 2m.i've checked all the surrounding resistors and nearby passives .i think its a power supply problem.i dont want to power it up yet until i find out what this part doesi dont want to take another one of these ants lol out and check it out of circuit.smt is not my thing.i've searched for a free schematic so if anyone out there's got the schematic that'll be great .i'll take on board what you guys have said many thanks for taking the time.

========================================
The OP did not mention the handheld radio model ,other than it is from
Kenwood. An instruction manual with circuit diagramme(s) of the
relevant radio can highly likely be found at : www.mods.dk

Frank GM0CSZ / KN6WH

The Service Manuals are available either as a free download from various
places or can be bought online and shipped overnight for a decent price.
All I have seen have extensive parts lists and detailed schematics and board
prints. You head needs to be there if the part is unknown. It could be
bipolar, fet, or even a regulator. If you don't know what model radio you
have, why not?

On Sep 1, 2:05 am, confused wrote:
anyone seen a surface mount part only markings on it are d k 9 z.it's on
a kenwood handheld tranceiver of mine which has burnt out.would
appreciate any info?
many thanks

--
confused

you need to do it logically and scientifically, which is the basis of
our hobby.

1.Get the service manual.
2.Get the part no, try Kenwood, if no go, then
3.Look at circuit diagram, identify component, replace with similar -
its unlikely to be critical.

I suspect you are out of your depth at this stage in your amateur
career, and perhaps it would be wise to seek the help of a local
technician or knowledgeable amateur - your local club could probably
help with contact details...

Andrew VK3BFA.

i checked the components characteristics .seemed to be two diodes on one chip.replaced it with two smt diodes and it works.
thanks for all your advice.