The tuner wraps were the first thing done on this set. Did find C4105 bad but helped very little, also found CR4112 shorted. Replacing C4112 repaired this set. Thanks guys this saved an untold amount of time as I have never come across a bad CR4112.
Robert J. Delhommer, Sr. Bob's TV P.O. Box 40 / 212 W. Lafayette St. Maurice, LA 70555 ----- Original Message ----- From: "walter wood" <[EMAIL PROTECTED]> To: "ELECTRONICS PROFESSIONALS LIST" <[EMAIL PROTECTED]> Sent: Thursday, May 06, 2004 3:03 PM Subject: Re: [Techs] RCA Model G31642CKLX1 Chassis CTC187CK Have you checked the grounds in the on board tuner? Also C4407 and CR4403 might cause this during a scene change. C4105 on B+ line. Regulator U4101 CR4112 and C4135 and C4238 Likely The first C4407 and CR4403, and they WILL check good and still fail. HTH Walter --- Bob's TV <[EMAIL PROTECTED]> wrote: > Got a real strange one here. Intermittently the > picture will pull in > horizontally & bounce back & forth horizontally, > sometimes the picture will > shrink on all 4 sides, sometimes the picture will > look like the tuner is off > frequency while it shrinks on all 4 sides. > I monitored the B+ and the collector of the HOT > and while acting up the B+ > drops to abt. 102Vdc and the collector wave form > reduces in amplitude but is > clean, no ringing or tearing. I am leaning > towards a bad regulator IC. > Anyone ever experienced anything like this > before. > > Robert J. Delhommer, Sr. > Bob's TV > P.O. Box 40 / 212 W. Lafayette St. > Maurice, LA 70555 > > > > _______________________________________________ > 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 ===== Walter Wood Future Tech Home Center 2786 Hwy. 43 N. Lawrenceburg Tn. 38464 931-829-3337 Fax 931-829-4044 mailto:[EMAIL PROTECTED] __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover _______________________________________________ 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
