Yea, I've seen that couple times already with Panasonic Robert tvservice@xxxxxxxxxxxxx H & H Electronics Inc ----- Original Message ----- From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, June 18, 2004 3:12 PM Subject: [TechAssist] Panasonic PT-51HX42F (P7 chass) instant shutdown, fix > This is a year old panasonic projection TV, PT-51HX42F, EP824 chassis, > known as a P7 chassis. > Turn on ,in a second, shutdown. After monitoring many voltage sources, > (volt meter on a source during power up, few seconds to see if the > source comes up or stays low...), came across the + and - 20 V source > feeding convergence and vertical. it was at about +/- 7 volts. Very low. > Removed vertical output IC (LA78045), made sure the CRTs were protected > from burn, and powered it on. No more instant shut down. > Close inspection of this LA78045 vert output IC showed a small burn hole. > It is a very small output mounted on a huge heat sink. Looks like > panasonic underrated this part. > Look for this to recurr again in others. > Phil Bader > > -- > > Philip Bader > Jan Phyl TV Inc. (estab. 1976) > 3420 Recker Hwy. Winter Haven, Fl. 33880 > Fax (863) 299-8821 > email: tjanphyl@xxxxxxxxxxxxxxx > > > > -------------------------------------------------------------------------- --- > 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/