The most common failure on these is the SSB (small signal board). It is very easy to replace. Looks like Philips has done an upgrade on these as the new part # is PH3912725871. (I just replaced one in a PTV915). Bob Waterman, CET® #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX geminitv@xxxxxxxxxxxxxxxx geminitv@xxxxxxx www.geminicomputertvsecurityalarms.com ----- Original Message ----- From: "Larry E." <videotech@xxxxxxxxxxxx> To: "tech-assist" <techassist@xxxxxxxxxxxxx> Sent: Wednesday, February 18, 2004 6:11 PM Subject: [TechAssist] Philips 50P8341 PTV915 audio goes up/down by itself > Hi Guys, I`m going out on this PTV915 tomorrow with no schematic, > customer says audio > goes up/down by itself, checked the tips base and found nothing, I only > see 2-3 NAP sets > a year here so I`m not familiar with this chassis, any tips on this > problem? tia, Larry E > > Larry Eastman > American TV & Electronics > Crystal River, Fl. 34428 > > > -------------------------------------------------------------------------- --- > 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/