LeRoy, I had the same problem. I changed the splitter and ended up with the same thing. Getting the board rebuilt fixed the problem. It looked like they did something with the horizontal timing circuit caps. Maybe your high voltage is changing? Just a thought. Al Marquardt [EMAIL PROTECTED] Al Marquardt Electronic Repair 206 W Main Girardville Pa. 17935 ----- Original Message ----- From: "Mark Wentowski" <[EMAIL PROTECTED]> To: "ELECTRONICS PROFESSIONALS LIST" <[EMAIL PROTECTED]> Sent: Friday, April 09, 2004 10:11 PM Subject: RE: [Techs] Zenith PVR4660VK (1995 model) Focus drifts.
> It's a Zenith eh. I'd rather not say.... > > Mark Wentowski > Perry Hill Electronics > 3836 Harrison Rd. > Montgomery AL 36109 > phone: (334)279-5622 > fax: (334)273-9050 > [EMAIL PROTECTED] > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of LeRoy Westlund > Sent: Friday, April 09, 2004 9:28 AM > To: [EMAIL PROTECTED] > Subject: [Techs] Zenith PVR4660VK (1995 model) Focus drifts. > > > Hi members, > This Zenith PTV has a fairly good picture after I adjust the focus on all 3 > tubes, but after about 20 minutes the focus adjustments drifts, and I have > to readjust the focus. > When it's cold, the adjustment range on the pots, are about in the middle. > After warm-up I have to turn it almost to the full range in the CW > direction. > > The gray wire from the High voltage bleeder assy., measures 44.2K to ground. > I understand that it should OHM out between 48-51K. I am thinking about > ordering a new Focus block assy., from H.B. electronics in California. They > have them for about $75. I checked all 3 of the 120K ohm resisters on the > CRT modules, and they check OK. Do I need to replace them anyway, and do you > think a new focus block will correct my problem, or am I over looking > something ? I guess what I need, is a little insurance from the list, before > shoveling out that much $$$ for a part I might not need. > > Please advise, > TIA, > 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:[EMAIL PROTECTED] > > > > _______________________________________________ > Tech Repair CD...order your just $49.00 plus shipping...One year of updates > free. > www.intrepid-video.com www.tech-repair.net > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com > > > > _______________________________________________ > Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. > www.intrepid-video.com www.tech-repair.net > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com > > _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
