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#1
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info wanted
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 |
#2
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info wanted
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 |
#3
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Quote:
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 |
#4
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info wanted
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 |
#5
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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 |
#6
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info wanted
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 |
#7
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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. |
#8
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info wanted
On Sep 1, 6:30*pm, confused wrote:
Highland Ham;644645 Wrote: 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. -- confused- Hide quoted text - - Show quoted text - More than likely your talking about a transistor maybe a mosfet The center lead is the collector or drain. Look for the same numbers on other parts and measure the forward to back ratio. To determine the kind of semi it is. should be quite ez. Mostly they using transistors like this for switching or buffers so I don't think it could be a darlington. It's either a npn or pnp. less likely a FET n channel or p channel It could still be a zener or a dual diode Zeners they connect the 2 leads together And a dual diode will have the same reading on each junction. 73 n8zu |
#9
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info wanted
========================================
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? |
#10
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info wanted
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. |
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