[TechAssist] Re: GE PTK195PB (52GW947) after tuner repairs noticed severe bow (pin cush) at sides
- From: <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 29 Aug 2003 08:35:54 -0500
Don't have a fix for you but a suggestion
I use a roll up projection screen on a collapsable tripod here in the shop
to view the picture. I turn the lite box on its side and put a crosshatch
pattern on then with the box on a roll around cart can move to get correct
focus and then can rough in any geometry and convergence before it goes back
home
I also have one wall covered with white board panels like you get at Home
Depot for bathroom walls it works well for projection sets and LCD/DLP
projectors that need a large screen surface.
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
Dallas, TX
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 28, 2003 5:31 PM
Subject: [TechAssist] GE PTK195PB (52GW947) after tuner repairs noticed
severe bow (pin cush) at sides
> I pulled the chassis box for a dead set,no click. The +12V run was
> shorted due to a shorted tuner IC U17701.
> Fixed that and I ran it on cart with a ceiling mounted screen all day
> but that method is not the best to see linearity.
> After installing in the box I saw a severe bow on the left and right
> sides.Pincushion distortion.
> Please, if there's any documented known culprits for this in the 195's
> I could use one!
> (Of course, a rush job)
> Phil Bader
> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
> For Professional Technicians Only
>
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