[TechAssist] Re: RCA TV Model #F26634SF/CTC187AB - no channels 7-50
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 11 Jan 2003 11:01:52 -0500
Go back and check again. I did the same thing but it wasn't a splash it was
a small bridge that looked like it belonged there.
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "Don Cohen" <bond007d@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 10, 2003 4:47 PM
Subject: [TechAssist] RCA TV Model #F26634SF/CTC187AB - no channels 7-50
>
> Just got this set in for intermitttent interference on channels
accompanied
> with blasts of audio. That problem was the typical tuner grounding
problem.
> Resoldered ground points (as I have many times). That fixed the problem
it
> came in for, but now there is just snow on channels 7-50. 2-6 and above
50
> are fine. Does this sound like the U7301 problem? What about U7401?
Which
> would be the more likely cause. Has anyone had a case where one of those
> parts was ok before the solder work and not after? I didn't find any
solder
> splashes, so I don't think I messed up there. I believe the channels were
> working before I started the solder work. I did find 3 caps that appear
to
> be bad as far as the ESR meter goes - C4105, C4404, C4505. C4105 was just
> about fully open. I don't think any of these would have anything to do
with
> the problem I have now, but I don't have a schematic so I could be wrong.
> Haven't replaced them and tried again yet because I wanted to replace one
of
> the ICs if that was the cause before I resoldered everything. Thanks for
> any thoughts anyone can offer on this.
>
> Best Regards,
> Don Cohen
> DC Electronics
> Shinglehouse, PA 16748
> (814) 697-7800
> bond007d@xxxxxxxxxxx
>
>
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