[TechAssist] [ Update] Zenith PVR4660VK Pix is bowed equally on top, bottom, and sides, and convergence is bad.

  • From: "LeRoy Westlund" <llw@xxxxxxxxxx>
  • To: "TechAssist" <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 21 Apr 2004 23:18:51 -0600

Hi Avery, and All;
Mine is using 3 of the STK391-020 on the Convergence Amp module.
I replaced them, and NO help. All the 1 ohm resistors are OK.
All my + and - voltages (+26, -26, and + 16) to both the output board, and
the registration board are all present. The 110K and the 82K ohm resistors
(R3243, and R3244) on the SMPS board are also OK.

I been trying to do a complete convergence alignment, but it's starting to
drive me crazy. All the controls on the registration board seem to work
normal, but, I'll be damned if I can swing them all into place. I am usually
pretty good at performimg dynamic convergence, but,...not this time, so
there may still be a bad componant somewhere. I even tried centering all the
controls, and starting over again. I can get it fairly close, but not close
enough to be anywhere near acceptable.


One more clue: When I adjust any ( Red, Green, or Blue) of the G-2 screen
controls, the vertical retrace line near the bottom of the screen has a
nasty 1/2 inch glitch in it. Might have something to do with the problem,
but I'm not sure where to look. Maybe a bad e-cap somewhere.

Thanks, anyway,
LLW

LeRoy Westlund
Westlund TV & Electronics
97 North Main                                "Where there's a will,...
Centerfield, UT 84622-0087           There's always a way."
Ph./Fax  435-528-3822
mailto:LLW@xxxxxxxxxx

-----Original Message-----
From: Avery Boyd <adBoyd@xxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Wednesday, April 21, 2004 7:05 AM
Subject: [TechAssist] Re: Zenith PVR4660VK Pix is bowed equally on top,
bottom, and sides, and convergence is bad.


>If the convergence board is using stk392-110 replace them along with the
>1ohm resistors.
>Avery Boyd
>4666B S. Mingo
>Tulsa OK 74146
>Phone 918-665-2400
>----- Original Message -----
>From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>To: "TechAssist" <techassist@xxxxxxxxxxxxx>
>Sent: Tuesday, April 20, 2004 10:46 PM
>Subject: [TechAssist] Zenith PVR4660VK Pix is bowed equally on top, bottom,
>and sides, and convergence is bad.
>
>
>Hi members,
>I repaired my focus problems by replacing the Focus block. I still have bad
>convergence, and the pix is bowed equally on top, bottom, and both sides.
>Does anybody have a fix listed for this problem ?
>I don't want to buy convergence amps, cause I'm pretty sure it won't fix
the
>problem.
>I'll buy some if you guys think I need them.
>Can't afford to waste money buying parts that won't help. So far,..so
>good,...but,..I need a quck fix,...bad !
>
>Any help is appreciated,
>LLW
>
>LeRoy Westlund
>Westlund TV & Electronics
>97 North Main                                "Where there's a will,...
>Centerfield, UT 84622-0087           There's always a way."
>Ph./Fax  435-528-3822
>mailto:LLW@xxxxxxxxxx
>
>
>
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