[TechAssist] Re: Zenith--- SL79355 --- 9-1343 cant comtrol the B+ pic jumps with lite pictures
- From: "Bill S" <billans@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 21 Feb 2002 12:45:46 -0800
Hi;
Do you have a print for this? I do not recognise the model number and am
not able to see what print to use for the module since I have only micro
fiches.
If you have the print, go to the ABL cirucuit which is often times a
feedback circuit from the flyback. You may be having problems with a small
electrolytic cap in this circuit off the pin of the micro.
Another thing to consider if this has a picture-in-picture set up is the PIP
circuit is not filtering good.
If this set has audio / video jacks, then send a video signal into the video
and determine what happens when your increasing the screen control and
brightness/contrast controls. Let us know what the results are.
Thanks
Bill Sorensen
New Life Video & Audio
billans@xxxxxxxxxxxx
----- Original Message -----
From: "Ken Dinckan" <kdinckan@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, February 20, 2002 6:12 AM
Subject: [TechAssist] Re: Zenith--- SL79355 --- 9-1343 cant comtrol the B+
pic jumps with lite pictures
>
> did you check the caps around the vertical circuit?
> e-mail to : kdinckan@xxxxxxx
> Ken Dinckan
> 2747 Roosevelt Street # B
> Carlsbad CA 92008
> tel:(760)4341131
> fax:(760)4348856
> ----- Original Message -----
> From: <Fishervcr7@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, February 20, 2002 12:37 PM
> Subject: [TechAssist] Zenith--- SL79355 --- 9-1343 cant comtrol the B+ pic
> jumps with lite pictures
>
>
> >
> > Make: Zenith
> > Model: SL79355
> > Chassis: 9-1343
> >
> > I been working on this TV set for a long time and can't figure it this
> out.
> > When the picture is a dark screen the picture doesn't jump, but when you
> get
> > a light screen it jumps a lot and you cant stand it. I replaced the
> picture
> > tube, voltage regular, flyback and lot of other parts, and I cant find
out
> > what is causing this, can anyone help?
> >
> > Thanks!
> >
> > Donovan Shuppas
> > Tri State TV Service Center's
> > 824 Broadway Blvd.
> > Steubenville,Ohio 43952
> > fishervcr7@xxxxxxx
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>
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