[TechAssist] Re: RCA TX808C chassis Model F19421 shutdown
- From: "LeRoy Westlund" <llw@xxxxxxxxxx>
- To: "TechAssist" <techassist@xxxxxxxxxxxxx>
- Date: Wed, 4 May 2005 13:14:49 -0600
Glad to hear that, Alvin.
Makes me feel good, that I was able to help someone, for a change.
Many times it just seems like a shot in the dark,...but,...you never can
tell when it might make a difference. That's why we should always
try,...even when we are not sure.
LLW
LeRoy Westlund
Westlund TV & Electronics
97 North Main " I forgot,..to remember,..
Centerfield, UT 84622-0087 to forget "
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: Alvin Rose
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Wednesday, May 04, 2005 11:24 AM
Subject: [TechAssist] Re: RCA TX808C chassis Model F19421 shutdown
>Hello Leroy
>I check the diodes in the high voltage system and you were partly
>correct ..it was a by448 diode but it was DL07 instead of DL04
>but both sit side by side in the same circuit and are togeather on the
>circuit
>board near the SMPS and flyback..It cured the troubles and everything works
>fine..I used an ecg-506 for replacement..1400volt 2amp diode and I replaced
>both units. Thanks for the info ..your help is appreciated.
>Alvin Rose
>LeRoy Westlund wrote:
>
>>Alvin,
>>Check this one out:
>>
>>Symptom: Dead,...won't turn on,...hear a tic tic. H.O.T. (TL02) collector
>>reads 80 volts.
>>Solution: Replaced DL04 (BY448) part # 248797 (shorted).
>>
>>HTH,
>>LLW
>>
>>LeRoy Westlund
>>Westlund TV & Electronics
>>97 North Main " I forgot,..to remember,..
>>Centerfield, UT 84622-0087 to forget "
>>Ph./Fax 435-528-3822
>>mailto:LLW@xxxxxxxxxx
>>
>>-----Original Message-----
>>From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
>>To: techassist <techassist@xxxxxxxxxxxxxx>
>>Date: Tuesday, May 03, 2005 6:24 AM
>>Subject: [TechAssist] RCA TX808C chassis Model F19421 shutdown
>>
>>
>>
>>
>>>We have an RCA TX808C chassis which shuts down when
>>>turned on..There is a high pitch frequency sound before shutdown.
>>>Switching and output transistors check ok as well as diodes etc in the
>>>circuits
>>>Any info or suggestions on this problem would be appreciated.
>>>
>>>Alvin Rose
>>>Radio & Tv Centre
>>>Marystown, NL
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>
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