[TechAssist] Re: Fw: Re: philips cca134at01 vertical hold problem
- From: "Dave" <dazevedo4@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 16 Oct 2001 16:37:48 -0500
I don't have the schematics for this one, thanks for the info
Dave
----- Original Message -----
From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 16, 2001 11:25 AM
Subject: [TechAssist] Re: Fw: Re: philips cca134at01 vertical hold problem
>
> 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
> > database better! Submit your fixes here:
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>
> Help make your TechAssist online repair tips
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>
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