[TechAssist] Re: Electrohome 27" Model 69CJ02 dead. ChassisVM1-A-C23R
- From: Ed Gaidies <teltek2@xxxxxxxxxxxx>
- To: TechAssist <techassist@xxxxxxxxxxxxx>
- Date: Mon, 07 Oct 2002 08:05:22 -0400
Change it.....10uf/100volts. Also check D905 (EG01) for legs eaten away by
electrolyte. IC091...(Regulator) might have to be changed too.
Really scrutinize solder connections around this circuit..But for point
of reference, anytime this chassis comes in...no matter what the problem
is....Change that C916. Makes the HV rise so fast and high, destroys H/O.
-Ed-
kevinstv The above is the reply to your message dated 10/7/02 2:40 AM
>
> Hi Ed,
>
> I did ESR all the caps including C916. ESR is 3.7 ohms and value is 10.4
> uF. Unless C916 is breaking down under load, then my solution lies
> elsewhere. Thanks.
>
> Kevin Wilks
> Kevin's TV and Video Repair
> Penticton BC Canada
> kevinstv@xxxxxxx
> ----- Original Message -----
> From: "Ed Gaidies" <teltek2@xxxxxxxxxxxx>
> To: "TechAssist" <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, October 06, 2002 8:58 PM
> Subject: [TechAssist] Re: Electrohome 27" Model 69CJ02 dead. Chassis
> VM1-A-C23R
>
>
>>
>>
>>
>> Kevin..
>>
>> Replace H/O again......replace all the components that burnt. Then change
>> C916.... May be an idea to ESR all the small caps in the regulator
> circuit,
>> since many of them will be leaking electrolyte. Most will show black
> residue
>> on the bottom of the board, but C916 is definitely the culprit for
> shorting
>> your H/O the second time.
>>
>> -Ed-
>> Tel-Tek Electronics
>> Midland, Ontario
>> Canada.
>>
>> teltek2@xxxxxxxxxxxx
>>
>> "If it's broke....Maybe we can fix it"
>>
>>
>>
>>
>>
>>
>>
>> kevinstv The above is the reply to your message dated 10/6/02 7:10 PM
>>
>>> Electrohome 27" Model 69CJ02 dead. Chassis VM1-A-C23R
>>>
>>> Hi fellow techs,
>>>
>>> Set came in dead with shorted HOT. Flyback rang good on Sencore.
> Replaced
>>> shorted HOT. Set came one for few seconds, then shorted HOT again.
> Removed
>>> HOT and tested B+ to collector of HOT with 150 ohm 10 watt resistor to
> ground.
>>> Set came on with sound and then started to burn D905 and R912. Turned
> off set
>>> since I don't allow smoking in my shop. Sounds like the STR-S5141G is
> bad,
>>> but it doesn't test shorted. All other reisistors in P/S test good. I
> am
>>> unfamiliar with this chassis. Does anyone have any ideas?
>>>
>>> Kevin Wilks
>>> Kevin's TV and Video Repair
>>> Penticton BC Canada
>>> kevinstv@xxxxxxx
>>>
>>>
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