I did not list the model because it has the Citizen name on it and some have difficulty cross-referencing that. I did find the problem, I changed C2100 (original value is 47mfd/35vdc) and accidentally installed a 4.7mfd/35v. When I put in the proper one the foldover disappeared. Thanks guys. Wilf Blakey Blakey TV,Kirkland Lake,Ont wblakey@xxxxxxxxxxxxxxxx ----- Original Message ----- From: "Bob@Bobs tv" <woodman1@xxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: June 26, 2002 11:29 AM Subject: [TechAssist] Re: zenith 9-1557 module,vertical retrace at top of screen > > Wilf, > Replace the Buck regulator QX3412 This set runs at 100 V B+ Please > list model # next time makes things a lot easier... > Bob, > > Bobs tv... Worcester, ma > > main 508-853-1482 > > fax 508-853-1480 > ----- Original Message ----- > From: wilfred blakey <wblakey@xxxxxxxxxxxxxxxx> > To: tech assist <techassist@xxxxxxxxxxxxx> > Sent: Tuesday, June 25, 2002 6:32 PM > Subject: [TechAssist] zenith 9-1557 module,vertical retrace at top of screen > > > > I have a Zenith 9-1557 module or C12 chassis with vertical foldover and > retrace at the top. I have already replaced the output IC and the three > electrolytics (c2100/c2105/c2104) and no improvement. I have checked and > replaced c3208 also with no change. The voltages are alright , 25v is 25v > and the 11v (pin 2) is 12v. Does anyone have any ideas? > > Wilf Blakey > > Blakey TV,Kirkland Lake,Ont > > wblakey@xxxxxxxxxxxxxxxx > > > > > > ------------------------------------------ > > To REMOVE your email address, click here: > > http://www.tech-assist.org/unsubb.html > > To CHANGE your email address, click here: > > http://www.tech-assist.org/change.html > > ------------------------------------------ > > ***NEW*** Tips Added Instantly!!!*** > > Submit Repair Tips here: > > http://www.tech-assist.org/secure/tip/ > > > > > ------------------------------------------ > To REMOVE your email address, click here: > http://www.tech-assist.org/unsubb.html > To CHANGE your email address, click here: > http://www.tech-assist.org/change.html > ------------------------------------------ > ***NEW*** Tips Added Instantly!!!*** > Submit Repair Tips here: > http://www.tech-assist.org/secure/tip/ > ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html To CHANGE your email address, click here: http://www.tech-assist.org/change.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/