Neil: Is the voltage you are measuring in the Standby mode or in the Run mode? If so, What are the voltages at CR4106(K) & CR4101(K) with respect to hot ground in the Standby mode? Are any of the supply voltages pulsing at a 0.5 to 1 second rate at U4101(15 & 16) Dennis Viereck tvdoctors@xxxxxxxxxxxxx wrote: > Didn't help! 130 goes to around 70. 12.6 goes to around 6.5 _15 and > positive 15 don't seem to go as low. Anything else to try. I do get a spark > like from a spark plug wire from the anode for about a second when power > button is hit. Neil > > > ** Original Subject: [TechAssist] Re: RCA ProJo PTK169PABS > > ** Original Sender: "Ron Miller" <rlmbkm@xxxxxxxx> > > ** Original Date: Tue, 20 Nov 2001 18:32:32 -0500 (EST) > > > ** Original Message follows... > > > > > B+ should be 143.5vdc change two caps to the left of U4101 a 2.2uf@100v and > > a 15uf @ 63v.,also check C4108 in base circuit of chopper. > > Ron Miller > > D.T.V. Texas > > > > ----- Original Message -----From: <tvdoctors@xxxxxxxxxxxxx> > > To: <techassist@xxxxxxxxxxxxx> > > Sent: Tuesday, November 20, 2001 5:03 PM > > Subject: [TechAssist] RCA ProJo PTK169PABS > > > > > > > OK here's the deal: I brought this projector module into my shop and > > found R767U open and R763U to be discolored. I replaced these with the high > > voltage splitter and checked other surrounding components. Set still won't > > activate. My B+ is 130 volts and all other secondary voltages are right on > > the track. I have a good pulse to the base of the horiz.. Output transistor. > > When I push the power button, I notice that the 130 volts gets loaded down > > to around 70 volts. If I disconnect the anode lead from the splitter and > > clip a lead from about a tenth of an inch from the lead to ground, it makes > > a spark once then shuts down, so I know my high voltage is trying to come > > up, but shuts down. I've checked the caps in the horiz.output collector > > circuit and they check good. The only thing I can find out of place is my > > 130 volt line is dropping down. Has anyone had a problem like this in the > > past? Could it be the flyback? Thanks for input on this. My customer > > would like to have this set back before Thanksgiving. Neil > > > > > > TV Doctors 108 W. Main St. Monroe,Wa. 98272 360-794-6469 > > > > > > ================================= > > > Help make your TechAssist database better! > > > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips > > > ================================= > > > To UNSUBSCRIBE your email address, click here: > > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe > > > > > > > > > > > > > ================================= > > Help make your TechAssist database better! > > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips > > ================================= > > To UNSUBSCRIBE your email address, click here: > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe > > > > >** --------- End Original Message ----------- ** > > > > > TV Doctors 108 W. Main St. Monroe,Wa. 98272 360-794-6469 > > ================================= > Help make your TechAssist database better! > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips > ================================= > To UNSUBSCRIBE your email address, click here: > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe ================================= Help make your TechAssist database better! Submit your fixes here: http://circuitwork.com/techassist/tip/#tips ================================= To UNSUBSCRIBE your email address, click here: mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe