[TechAssist] Re: GE - 31GT657FM1, Chassis CTC177CC


Remove all the solder from inside the tuner wrap and
all it's stakes. Carefully resolder everything with
silver solder which you can get at Radio Shack. Comon
problem. TCE gives servicers what is call an "S-Kit"
which contains the silversolder, the flux and the
template for recognizing the stakes within the tuner
wrap. This causes many problems, especially vertical
problems and can corrupt the EEprom.

Jack


--- Premium Technologies <premtech@xxxxxxxxxxxxxx>
wrote:
> Content-Type: text/plain;
>       charset="Windows-1252"
> Content-Transfer-Encoding: quoted-printable
> 
> BlankGentlemen,
> I'm having an elusive vertical problem with the
> above described which is =
> producing a horizontal line 1/4 of the way down from
> the top of the =
> screen.  No schematic on this one, but from past
> experience it seems my =
> in voltage might be low on the vertical deflector
> U4501.
> I've replaced U4501,  and about 8 of caps in that
> circuit, (C-4502, =
> 4108, 4107, 4506, 4505, 4705, 4112, 4404) with no
> change in symptoms.  =
> My voltage readings on pin 1 and 2 of U4501 are 13.4
> and 24.7 =
> respectively, and 23.0 on 5-Vout.
> I've traced circuit for open shorts with no luck,
> and quickly running =
> out of patience.  Any help would be appreciated...
> Bill
> Premium Technologies
> Ocean Park, Washington
> 
> 
> 
> 
> 
> 
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=====
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Suite 350
Wichita, Kansas 67208
316-686-8324
316-686-4815 fax

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