Re: TV tunes all channels but not properly.

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#529

From: alitonto
Date: Mon, 11 Jul 2005 23:54

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I am not sure how to check the IF section because I cannot get a
reading with my digital meter on the tuner's IF pin.  Is it possible to
measure some DC volts there or only frequency can be measured?
I have checked and replaced marginal caps so far.
Ali.

b wrote:
> alitonto ha escrito:
> > Teak TV ct-M687;HDTV   Any advice please.
> > All channels can be somewhat tuned but none of them look good.
> > Picture is distorted/wavy and the sound cuts in and out for about 5
> > minutes from when TV is first turned on.
> >
> > I have tested with a VCR and cannot receive stations from the RF but
> > this is confusing me: I switch the VCR to test and can get the 2
> > vertical white lines by tuning the TV to channel 3 (via RF) but cannot
> > receive anything.
> > However I do get perfect picture and sound via the scart connector.
> >
> > So far I have resoldered etc.; I have B+ at 12.11v and various voltages
> > on other pins at the tuner but no reading on the IF pin.
> >
> > I would appreciate any thoughts on narrowing down the problem.
> > Thanks
> > ALI
>
> sounds like you need to check the I.F. section for bad caps and/or  the
> aft may need a tweak.
> B.

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From: "alitonto" <alitonto@hotmail.com>
Newsgroups: sci.electronics.repair,aus.electronics
Subject: Re: TV tunes all channels but not properly.
Date: 11 Jul 2005 16:54:35 -0700
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