Thanks for the quick response. If I power the board without the yoke being connected, I get osc. and the B+ goes to around 112 volts for about 10 seconds but if I connect the yoke it goes to immediate shutdown. I checked the yoke return cap and it checks good and also the 100mfd filter cap on the primary of the drive transformer as well as the spike cap on the collector of the Horiz. Output transistor. I'm beginning to suspect a bad yoke. Is this chassis designed not to power up if the yoke is unplugged? > ** Original Subject: RE: [TechAssist] Re: Sharp 25R-M100 > ** Original Sender: "Rs Tek Inc" <rstek@xxxxxxxxxx> > ** Original Date: Fri, 1 Feb 2002 14:47:38 -0500 (EST) > ** Original Message follows... > > Check the HOT as well as the solder on the horizontal drive transformer. The > B+ may be a bit high at 154v. something is shorted though if it goes into > shutdown immediately. Hope this gives you some direction. > > Frank > Rs-Tek Inc. > > ----- Original Message -----From: <tvdoctors@xxxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Friday, February 01, 2002 2:25 PM > Subject: [TechAssist] Sharp 25R-M100 > > > > No print on this unit. Replaced flyback transformer and regulator IC701, > but still won't run. Tries to come up at first plug in but goes to immediate > shutdown. Secondary power supply voltages are 154volts, 15 volts, and 11 > volts. Can anyone shed some light on this one, Thanks, Neil > > > > TV Doctors 108 W. Main St. Monroe,Wa. 98272 360-794-6469 > > > > ------------------------------------------ > > Make your TechAssist database better! > > Submit Repair Tips here: http://www.tech-assist.org/secure/tip/ > > ------------------------------------------ > > To UNSUBSCRIBE your email address, click here: > > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe > > Or send a BLANK email with unsubscribe in the > > SUBJECT field to the address above. > > > > > > ------------------------------------------ > Make your TechAssist database better! > Submit Repair Tips here: http://www.tech-assist.org/secure/tip/ > ------------------------------------------ > To UNSUBSCRIBE your email address, click here: > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe > Or send a BLANK email with unsubscribe in the > SUBJECT field to the address above. > >** --------- End Original Message ----------- ** > TV Doctors 108 W. Main St. Monroe,Wa. 98272 360-794-6469 ------------------------------------------ Make your TechAssist database better! Submit Repair Tips here: http://www.tech-assist.org/secure/tip/ ------------------------------------------ To UNSUBSCRIBE your email address, click here: mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe Or send a BLANK email with unsubscribe in the SUBJECT field to the address above.