[TechAssist] Re: UPD*8TV Zenith Z25A02G, 9-1789, video distortion

I would be amazed if an isolator fixed that. Sounds like shadow mask
problem.
Back up another zenith. AL
----- Original Message -----
From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, July 30, 2001 5:00 PM
Subject: [TechAssist] Re: UPD*8TV Zenith Z25A02G, 9-1789, video distortion


>
> Thanks Fuzz,
> I know about that, but I have to turn it down a little more, maybe a
quarter
> turn to get rid of the intermittent distortion.
> Can I send it out, now that's it's working, or should I install a CRT
> isolator on it?
> Jeff
>
> FAX 1-413-280-0677
> Jeff Dougherty **Vacation 8/27 to 8/30**
> Intrepid Video & Electronics
> 501 Luther Rd
> Harrisburg, PA 17111
> 717-909-8844
> VCR tips, electronics info & general interest.
> www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
>
>
> ----- Original Message -----
> From: "Fuzz" <fantaj@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, July 30, 2001 4:43 PM
> Subject: [TechAssist] Re: UPD*8TV Zenith Z25A02G, 9-1789, video distortion
>
>
> >
> > Hi Jeff
> > normally on zenith you adjust G2 till the picture gets bright with
> > retrace then back off.
> > hope this helps
> > fuzz
> > ----- Original Message -----
> > From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, July 30, 2001 4:24 PM
> > Subject: [TechAssist] Re: UPD*8TV Zenith Z25A02G, 9-1789, video
> > distortion
> >
> >
> >
> > I just found out, reducing the screen voltage, the distortion does not
> > come
> > back.
> > Is this a sign of a weak tube, already?
> > Jeff
> >
> > FAX 1-413-280-0677
> > Jeff Dougherty **Vacation 8/27 to 8/30**
> > Intrepid Video & Electronics
> > 501 Luther Rd
> > Harrisburg, PA 17111
> > 717-909-8844
> > VCR tips, electronics info & general interest.
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> >
> >
> > ----- Original Message -----
> > From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> > To: "Techsonline" <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, July 30, 2001 4:04 PM
> > Subject: [TechAssist] TV Zenith Z25A02G, 9-1789, video distortion
> >
> >
> > >
> > > This is an odd one.1998 set, 9-1789 module
> > > Usually during scene change, the picture, about two inches high
> > appears
> > out
> > > of focus, distorted.
> > > Distortion is all the way across the CRT, about two inches high, lasts
> > for
> > > any where from a few seconds, or until the next scene change.
> > > At one point, I had rainbow colors around the outside edges, turning
> > off,
> > > and back on and the picture was normal until these wavy, distorted
> > bars
> > > appeared.
> > > Has any one seen this one before?
> > >
> > > Jeff
> > >
> > > FAX 1-413-280-0677
> > > Jeff Dougherty **Vacation 8/27 to 8/30**
> > > Intrepid Video & Electronics
> > > 501 Luther Rd
> > > Harrisburg, PA 17111
> > > 717-909-8844
> > > VCR tips, electronics info & general interest.
> > > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> > >
> > >
> > >
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