[TechAssist] Re: Fw: Re: philips cca134at01 vertical hold problem
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 16 Oct 2001 11:25:45 -0500
Vertical drive comes from IC301, M52772FP, pin 21. Vertical sync is an
internal function of this ic and it is probably bad or some outboard
component in that area. I have no history or other information, just a
schematic. You may try applying some heat and circuit cooler in the area of
IC301 to see if the problem changes.
Jim Myers
jr.myers@xxxxxxxxxxx
----- Original Message -----
From: "Dave" <dazevedo4@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 16, 2001 11:02 AM
Subject: [TechAssist] Fw: Re: philips cca134at01 vertical hold problem
>
>
>
> I have a good raster, in fact the menu and overlay (channel numbers, time
> is
> good and sharp). Video in, VCR and rf in all have the same problem, the
> vertical sync. has rolling almost like the freq. is wrong, horz looks
good
> ( when I inject in video in or rf in, (a cross from the pattern gen) the
> horz is right in the middle, the vertical has dots all over the screen no
> line what so ever. it is a TV/VCRs
>
> Dave
>
>
> Help make your TechAssist online repair tips
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