Re: Sony KV-27EXR25 Pincushion and No Picture Problem
From: Lance (plancer_at_hotmail.com)
Date: 10/05/04
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Date: 4 Oct 2004 17:49:49 -0700
Any chance at getting a hint as to where or what the "screen control"
pot looks like?
I have a diagram of the major components in this TV but no mention of
a "Screen" anything... Focus, H Stat, V Stat, AGC...but no "Screen"
Would it be near the flyback?
Boy does time fly, the date inside the TV is 1991.
Thanks.
Andy Cuffe <baltimora@psu.edu> wrote in message news:<ilfkl0hbss2cjhu9q5klakiq4m57elpqrq@4ax.com>...
> On 28 Sep 2004 20:12:16 -0700, plancer@gmail.com (Lance) wrote:
>
> >Sony KV-27EXR25
> >Started out having an annoying issue where when displaying a Bright
> >Image (lots of white in the picture) the screen would "neck in" in the
> >middle of the screen, almost like adding severe pincushion.
> >
> >Annoying but dealt with it..
> >
> >Now it has the a blanking issue where the picture will not come up for
> >5-10 minutes after being turned on. When it does come in, it blinks
> >in top/bottom half of the picture for 20-40 seconds then finally locks
> >in. Occasionally I notice on quick picture changes, the screen will
> >drop out for a second. But then comes right back. Still has the
> >pincushion issue though.
> >
> >Any good ideas / URL to an FAQ? I'm good with electronics but never
> >worked on TVs.
> >
> >Thanks!
> >Lance
>
>
> Have you tried turning up the screen control a little? The picture
> will be blanked if the CRT cathode current isn't high enough. As the
> CRT ages it's sometimes necessary to readjust the screen control. I
> generally adjust it about mid way between where it blanks and where
> you start to see retrace lines.
> Andy Cuffe
> baltimora@psu.edu
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