[TechAssist] Re: Philips Model 50P8341 / PTV915 Pincushion problem????/Trying Again

  • From: "Ty" <ty1k@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 10 Feb 2004 11:47:10 -0800

Walter,
Q7552 = 9336 594 40687 PNP TIP42C  Sub 4835 130 4708
Please check the resistor number. It does not show it.
Ty
Tiberius Kraemer
Blue Star Electronics
3312 Silverton Rd. NE
Salem, Oregon, 97303-2753
Phone: 503 391 1491
ty1k@xxxxxxxxxxx
----- Original Message ----- 
From: "walter wood" <wwood_38478@xxxxxxxxx>
To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, February 10, 2004 8:11 AM
Subject: [TechAssist] Philips Model 50P8341 / PTV915 Pincushion
problem????/Trying Again


I'm asking again on this one.
I've found that many times, requests submitted on
Late Fridays don't draw much fire.
So far, the small signal module and eeprom have
been sugested.
Does anyone have the value of R7552 and part no. of
Q7552?
Thanks
Walter



> I don't think I've seen anything like this
> before.
> The raster is convex.
> Instead of being pulled in in the center of the
> screen, it's pulled in on the corners.
> The center cross hatch is straight and the
> convergence is OK except for the corners where
> the
> lines bend IN horizontally.
> There is a slight downward(horizontal) bow top
> left
> and right corner, and a hardly noticeable upward
> bow on the bottom.
> It seems to affect all three colors equally, but
> the colors are separated in the affected areas.
> The bending is only in about the top and bottom
> 1/5th of the picture, affecting about three
> vertical lines on the cross hatch , about 2 1/2
> inches(pulling in horizontally).
> I've only found 1 tip that might apply.
> Q7552 and R3452.
> The value for R3452 was not given.
> Could this be component failure or a glitched
> eeprom?
> Help!!!
> TIA
> Walter


=====
Walter Wood
Future Tech Home Center
2786 Hwy. 43 N.
Lawrenceburg Tn. 38464
931-829-3337
Fax 931-829-4044
mailto:wwood_38478@xxxxxxxxx

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