[TechAssist] Re: Fisher PC5527...R341 value...
- From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 20 May 2002 08:31:59 -0300
Terry,This info is for the G3V chassis,PC5525;R341=3.3ohm1/4 watt,Q341 is
your ripple filter,it's collector voltage comes from pin 8 of fly via
R474=1.8ohm,D474 &R341.Emmiter voltage of Q341 is 12volts & goes to the MB
pin of tuner &Q251and IC251 pin 21,the audio control IC.After
checking/replacing the above,if Q341 emmiter voltage is low,I would lift the
MB pin on tuner,pin 21 of IC251,etc,you know the routine,to find the bad guy
in this cct...hth..Don.........
HARTS-TVCR''ASC''
9-Robert St.,Oromocto,NewBrunswick,CAN
Tel#506-357-9785Fax#506-357-6010
----- Original Message -----
From: "Terry H." <tvdoc@xxxxxxxxxxxxxx>
To: "Techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
Sent: Sunday, May 19, 2002 4:25 PM
Subject: [TechAssist] Fisher PC5527...R341 value...
>
> This set shuts back down in a few seconds. Found the output of the run
9volt
> reg. IC341 at .2volts. Traced it to a shorted Q341 and a burned R341.
Burned
> too bad to read and too small to scrape. The ouput leg of the reg. is
still
> 10ohms off ground even after changing Q341. If someone can get as far as
the
> value of R341, maybe you could explain Q341's function. Having to trace
> point to point and starting to go blind. This set is similar to the early
to
> mid 90's Sanyo AVMxxxx series. Thanks.
> Terry H.
> The TV Shop
> 315C St. George St.
> Gonzales, Tx. 78629
> 830-672-7403
>
>
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