Jeff, Check pin 1 of U3101 and make sure that the voltage is 5V. If it is low,sub an external 5 V and see if the set turns on. BTW, pin 1 is the reset line. Paul Westcott Kingsway Electronics 1090 kingsway Sudbury,Ontario Canada Phone 705 566-9290 Fax 705 566-5349 ----- Original Message ----- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Tuesday, March 09, 2004 3:04 PM Subject: [TechAssist] Re: UPD---2nd request. PTK169PAAS..Shutsdown. > Found resonator had electrolyte all around it...cleaned board, replaced resonator and two caps right > there...now standby is fine, but of course this *&^*^* set still shuts down. > Voltage on pin 16 of U4101 is 10.4 v...stand by and when I press power doesn't change...pin 15 is the > same.. > I've been all over the troubleshooting guides, changed ALL the caps in the regulator circuit, CR4118 > changed and checked all the resistors... > On me last breath...I appreciate the many responses and will send my thank yous after I get this fixed... > Thanks. > > > Jeff Dougherty > Intrepid Video TV/VCR > 263 S Front St > Steelton PA 17113 > fax...717-564-4952 > www.intrepid-video.com www.tech-repair.net > > ----- Original Message ----- > From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx> > > Still working on this, can not figure out why it is shutting down as HV builds. > Would a defective vertical section cause this set to shut down? > REG B+ is 170 in standby, drops to 162 when I press power..is this normal on this set? > Schematic shows Reg B+ <72-A>, Not sure what that means. > I've repaired many of these with a splitter, flyback or replacing the parts in the power supply. > I've done all this and set still shuts. I've replaced all the caps, the boxed caps in front of the HOT, > CR4118(tested OK), U4101, Q4101, Q4401..and all the caps. Checked all the diodes and resistors and can > find no problems. > I'm running out of time on this one....Does anyone have any idea what I may have missed? > Thank you. > > Jeff Dougherty > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > > ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/