Try increasing the screen control to rule out a vertical problem. you have to be able to look while you do this, if there is vertical collapse, it won't take long for the line to etch the CRT's. There was a capacitor listed in the tip I sent you, did you check that? Jeff -- Intrepid Video TV/VCR Repair 263 S Front St, Steelton PA 17113 717-939-7708; (F) 717-564-4952 www.intrepid-video.com www.tech-repair.net ----- Original Message ----- From: "javiles6" <javiles6@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, May 21, 2004 12:23 AM Subject: [TechAssist] Re: Magnavox Mod# PR3446-A106 (PTV515-AHO1) need help Jeff Thanks, I have already found Q901 and R934 faulty, all i`m waiting for is to get the .33ohm resistor to try and see if this baby turns on. I have not rang the fly because i don`t have a fly tester, all i hope is the fly is not the culprit of this problem. And just for testing purpose i try a .22ohms instead of the .33ohms and the HVOT got hot and there were no voltage coming out of neither leg of the transistor. I wick out one leg of the resistor and the voltage comes back up. What is the purpose of R934 in this ckt. Does it have to be the correct ohms to trigger the HVOT. I don`t have the schematic to study this ckt. Any ideas. Thanks Jose ----- Original Message ----- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Thursday, May 20, 2004 12:43 PM Subject: [TechAssist] Re: Magnavox Mod# PR3446-A106 (PTV515-AHO1) need help > Jose, > All I have..from Tech Repair CD: > Sylvania\SWR4620 PTV520-AH01\No high voltage. Audio OK\\\PTV520-AH01\Replaced shorted Q906 (2sd1556)* > Open R934 (.33 ohm) and fly (4835-1406-7128). Noticed a leaking lytic on the top edge of the same defl > board: C827 (1000/25V)\\\\\\\\ > > > Jeff > -- > Intrepid Video TV/VCR Repair > 263 S Front St, Steelton PA 17113 > 717-939-7708; (F) 717-564-4952 > www.intrepid-video.com www.tech-repair.net > ----- Original Message ----- > From: "javiles6" <javiles6@xxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Thursday, May 20, 2004 3:40 AM > Subject: [TechAssist] Magnavox Mod# PR3446-A106 (PTV515-AHO1) need help > > > Hello Techs > This set came in yesterday with sound but no picture. Found HVOT shorted(D1556)(Q901) but before i install > the new one (2SD1556) i check the surrounding parts that connect to the transistor, D910, R961 and L903 > and they check good. I also resolder the T901 just to make sure i have no problem. Now the set have High > Voltage and the picture tubes filament are lighted but still have no picture. I also check the voltage on > the CRT ckt and is 225V on all three CRT resistors. Now i don`t have an high voltage probe so i don`t > know if the high voltage is reaching the picture tube anode. Does someone have any idea or tips that can > help me with. I`m free to any suggestion. > > Thanks > > Jose > > Aviles Computer & TV Repairs > 508 Bingaman st > Reading, PA 19602 > Tel # 610-478-1342 > > -------------------------------------------------------------------------- --- > 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/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/