[TechAssist] Update : Zenith PVR5263RK Focus/Brightness Fluctuate
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 6 Nov 2001 21:36:00 -0500
We found several ring cracks on connectors throughout all modules....the one
that seemed the worse was at connector 3B5 which is on the stand up daughter
board on the sweep/smps.
Now that we have that resolved we are seeing slight fluctuation in
brightness AND focus on all 3 CRTs.
Also...in order to achieve focus , we have the pots on the bleeder assembly
maxed. Looking at a cross hatch you can see the focus varying ever so
slightly.
The bleeder is fed by the HV splitter.....has anyone seen these fail & cause
this symptom?
Jeff Stielau
Shoreline Electronics Repair
125 Beechtree Lane
Westbrook,CT 06498
860-399-1861 Voice
860-664-3535 Fax
jstielau@xxxxxxxx
----- Original Message -----
From: "Shoreline Electronics" <jstielau@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 06, 2001 11:42 AM
Subject: [TechAssist] Zenith PVR5263RK Dark Smeary Video
>
>
> Make : Zenith
> Model : PVR5263RK w/9-1302 sweep/smps & 9-1527 signal bd
>
> Problem : Dark Smeary Video...red seems most predominant. Customer says
> problem may be OK for a few minutes...then it fails. We have not seen it
> working OK
>
> All of the 120K resistors have been changed on the CRT drive boards &
> connectors resoldered also on the CRT drive by another shop.
>
> Right now I'm changing R3243 & 3244...they do check OK though....they are
> the original parts.
>
> R3267 looks a little crispy...can someone confirm it's value? (3.3ohm?)
>
> Any other common areas on this set we should be checking for this type of
> failure?
>
> Jeff Stielau
> Shoreline Electronics Repair
> 125 Beechtree Lane
> Westbrook,CT 06498
> 860-399-1861 Voice
> 860-664-3535 Fax
> jstielau@xxxxxxxx
>
>
>
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