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Article #478

Re: Final Result "believe it or not" for:Teac TV ctm687 tuner problem

#478
From: Mark D. Zacharias
Date: Tue, 09 Aug 2005 11:38
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"alitonto" <alitonto@hotmail.com> wrote in message 
news:1123571091.073000.66270@o13g2000cwo.googlegroups.com...
> Firtsly many thanks to all of those who participated in this thread.
>
> Originally the picture on this TV was wavy and distorted.
> I replaced a few marginal electrolityc capacitors and the picture
> looked almost normal but was always grainy on all channels.
>
> After checking I/Cs etc. I decided to remove the tuner (big shitty job)
> and checked for opens etc.  I did find a connection which looked as if
> it had a bad contact and resoldered it back properly. Tuner put back
> and TV turned on and to my disbelief the picture on all channels was
> still grainy.
>
> I was furious and in anger I started to fiddle with any internal
> controls I could put my finger to. Offcourse nothing improved except
> that I messed up the colours etc.
>
> So the TV had its backpanel replaced and put on the floor for disposal
> or eventually parts.(at least to get back all those caps I had
> replaced).
>
> Later on that day I thought I will try the "one in a million"
> possibility; I took the TV inside the house and connected to the house
> antenna. I spent the next couple of hours contemplating how I was going
> to take this F... thing apart again to fix up the messed up colours
> caused by me in anger; why? because the picture on all channels was no
> longer grainy.
>
> Note: in my garage I use a different antenna which has been always been
> okai but for some reason it did not please this HDTV television.
> The TV is now fully functional.
> Cheers
> AL
>

AGC overload?

Mark Z. 
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From: "Mark D. Zacharias" <spammenot@nonsense.net>
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Subject: Re: Final Result "believe it or not" for:Teac TV ctm687 tuner problem
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Date: Tue, 09 Aug 2005 11:38:59 GMT