Look for bad connections first, and that all plugs are firmly seated on their sockets. I do not have a print on that set, but I have seen quite a few with bad connections causing intermittent HV. Just go over all connectors carefully. Hope this helps. John Florea Jr. Affordable Electronics Tumwater Washington. ----- Original Message ----- From: "tomlee" <t8872695@xxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Wednesday, April 30, 2003 3:52 PM Subject: [TechAssist] Zenith PTV model PVR4663RK intermitent highvoltage > > Hello Fellas. > I am working with this PTv model PRV-4663RK .Last time I post with out my > schematic .Now I already have it from Treausrechest.Cutomer said It > sometimes has highvoltage and picture.When I remove backcover > And take board abit out. It never show highvoltage again.Findout IC3401 does > not oscilate.Pin 14 is zero volt. I jump pin14 with pin15 .Because pin 15 > has+5volt in standby. The set works one hour. Then customer call me It does > not have > highvoltage and picture again. Any body tell me How this IC is turn on ?What > make this IC turn on(switched) when power button is pushed. THANKs > > Dang TD electronics > > > **************************************************************************** * > The Tech Address Book: > http://www.tech-assist.org/secure/tip/contact.html > Add a Repair Tip Here, or Change/Remove your Email Address: > http://www.tech-assist.org/secure/tip/main.html > Lost Password: > http://www.tech-assist.org and select "Lost your Login Info?". > Email Archives: > http://www.freelists.org/archives/techassist/ > ***************************************************************************** The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.html Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.html Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: http://www.freelists.org/archives/techassist/