Kevin, Also, I presume you've checked the Horiz. Driver Transformer for poor solder connections, this is a well known cause of HOT failure in these sets. Dan Webster Webster's TV Shullsburg, Wi. ----- Original Message ----- From: "armando guerra" <birdie@xxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Tuesday, July 06, 2004 4:07 PM Subject: [TechAssist] Re: RCA CTC177BP2, questions about the pincushion capacitor > Not an rca expert but do know that the cap will cause a pin problem.I think the > first hot was a bad one.Since the cap had a bulge in it,I would also replace > CR4403.I alway';s replace both for safety. Just my 2 cents worth. > Mando > Birdie's TV & Electronics > Casa Grande, AZ > > Kevin wrote: > > > Here is one for you RCA experts out there. Set came in with shorted > > HOT, D1885. Replaced same with exact replacement that had lighter and > > different white printing on the case of the transistor. Set fired up > > with HV and HOT instantly blew. Replaced with C5297 and set came on > > this time with washed out picture with retrace lines and severe > > pincushion problem on the sides. The picture also filled the screen > > slowly from the sides, making it appear to have a voltage regulation > > problem. The width would also vary when the screen was adjusted. Pin > > one of the STK measured -40.3 volts, well within specs. Not a voltage > > regulation problem. Found and replaced the pincushion capacitor, C4407, > > a 47nF blue cap that was open and bulged. All problems go away. > > FLABBERGASTED. > > > > Now my question is two fold: Would this one pincushion cap cause all > > these problems including causing the HOT to short? And could my > > original HOT that I installed been a fake? > > > > I have a second RCA set (two in one day), a CTC187CN3 that had a shorted > > HOT as well, a BUH517. I found a bad connection on the same pincushion > > cap (this time a 41nF cap). The customer also complained about having > > trouble getting the set to come on, and then when it did, the video > > would go off and on. So far it is working fine on my test bench with a > > new BUH517 installed and the bad connection repaired. Could this same > > cap have caused these 3 problems as well? Thanks for listening. > > > > Kevin Wilks > > Kevin's TV & Video Repair > > Penticton BC Canada > > kevintv@xxxxxxx > > > > > > -------------------------------------------------------------------------- --- > > 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/