Gary, The 33v seems to blow instantly. The other diodes, transistors don't go for a little wire. I saw no shorts on the tuner or vertical IC. Transformer is a possibility, though I have never heard of that on these sets. Thanks for the input. Jeff -- Intrepid Video TV/VCR Repair 263 S Front St, Steelton PA 17113 717-939-7708; (F) 717-564-4952 www.intrepid-video.com www.tech-repair.net ----- Original Message ----- From: "Gary McCartney" <gary@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Saturday, September 25, 2004 1:21 AM Subject: [TechAssist] Re: Sylvania(Funai) WSSC192 combo..33v zener shorts Jeff, what about something unusual such as leakage between primary and secondary of the SMPS transformer? Does the 33V zener blow instantly or is there enough time to do measurements? Is the 33V rectifier installed backwards by any chance? Gary McCartney McCartney Electronics Guelph Ontario Canada Est. 1984 email: gary (at) number63.ca Intrepid Video Support wrote: > Thanks Peggs... > I checked continuity on all the traces and pulled back the coating..all is > fine in that area. > Jeff > -- > Intrepid Video TV/VCR Repair > 263 S Front St, Steelton PA 17113 > 717-939-7708; (F) 717-564-4952 > www.intrepid-video.com www.tech-repair.net > ----- Original Message ----- > From: "peggs" <peggs@xxxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx>; "Techassist" <techassist@xxxxxxxxxxxxx> > Sent: Wednesday, September 22, 2004 11:36 AM > Subject: [TechAssist] Re: Sylvania(Funai) WSSC192 combo..33v zener shorts > > > If there is a mounting screw near the opto,check the pcb for a crack at the > screw. > capstan motor are bad in many of these as well,it pulls the 12v supply down > > Peggs > > At 06:27 PM 9/21/04, Intrepid Video Support wrote: > > > >>Set came in dead, with a squeal. >>Replaced D615(33v), Q605, Q606(Shorted) R566, high in value, D629 >>(1N4148..shorted) and I replaced the >>opto..all diodes and transistors shorted again. >>I replaced again, this time replacing Q604..33v zener shorted again. >>I checked D621, D609, D616, 617, 613, the 10 ohm resistor R654. >>Evidently I'm missing something..and losing on a job that should have been >>a quick fix.. >>Can anyone offer any help? >>Thanks. >>Jeff >>-- >>Intrepid Video TV/VCR Repair >>263 S Front St, Steelton PA 17113 >>717-939-7708; (F) 717-564-4952 >>www.intrepid-video.com www.tech-repair.net >> >>----------------------------------------------------------------------------- >>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/ > > > > ----------------------------------------------------------------------------- > 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/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/