Turned off TV. Tried to turn it on about 3 hours later. No power to set. Ran extension cord to known working outlet and still no power to set. Where to start? I have no repair manual.
CHECK FOR 12 VOLTS DC (AC-OFF DETECT) AT PIN 3 OF PC9A21 IF MISSING REPLACE PC9A21 PART # 268P058020 ON THE POWER PCB. 2. SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR OPEN L902 PART # 351P155010 OFF Q904 C (15 V SUPPLY) ON THE MAIN PCB. 2- SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR SHORTED D913 PART # 264P722010 AND OPEN Z901 PART # 283P039020 (Z905 AND Z900 M. 3- CHECK FOR four(4) BAD CAPACITORS IN DM MODULE. 4- CHECK FOR 10 VDC AT PIN 5 OF IC502 OF LOW, CHECK IC503 PART # 270P704010 ON THE MAIN PCB. 5- SUSPECT SHORTED WINDINGS OF T5A31 PART # 349P216010 ON THE MAIN PCB. 6- SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 7- SHORTED HORIZONTAL OUTPUT TRANSISTOR. 8- COOLENT HAS LEAKED ON THE MAIN BOARD FROM THE CRT'S AND HAS DAMAGED THE MAIN BOARD BEYOND REPAIR. These are a few of my notes on this Set from me and a few of my buds in the buisness. Good Luck and let us know how you made out with this set.
Thank you for your comments. It sounds like it may not be the best set to own. It came with the beach house we bought a couple of years ago. Have not opened up the set yet. I assume there will be a schematic inside. Otherwise, do you recommend where to get a repair manual for this set. Thanks again, Dadala
CHECK FOR 12 VOLTS DC (AC-OFF DETECT) AT PIN 3 OF PC9A21 IF MISSING REPLACE PC9A21 PART # 268P058020 ON THE POWER PCB. 2. SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR OPEN L902 PART # 351P155010 OFF Q904 C (15 V SUPPLY) ON THE MAIN PCB. 2- SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR SHORTED D913 PART # 264P722010 AND OPEN Z901 PART # 283P039020 (Z905 AND Z900 M. 3- CHECK FOR four(4) BAD CAPACITORS IN DM MODULE. 4- CHECK FOR 10 VDC AT PIN 5 OF IC502 OF LOW, CHECK IC503 PART # 270P704010 ON THE MAIN PCB. 5- SUSPECT SHORTED WINDINGS OF T5A31 PART # 349P216010 ON THE MAIN PCB. 6- SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 7- SHORTED HORIZONTAL OUTPUT TRANSISTOR. 8- COOLENT HAS LEAKED ON THE MAIN BOARD FROM THE CRT'S AND HAS DAMAGED THE MAIN BOARD BEYOND REPAIR. These are a few of my notes on this Set from me and a few of my buds in the buisness. Good Luck and let us know how you made out with this set.
Thank you for your comments. It sounds like it may not be the best set to own. It came with the beach house we bought a couple of years ago. Have not opened up the set yet. I assume there will be a schematic inside. Otherwise, do you recommend where to get a repair manual for this set. Thanks again, Dadala
Sure can. Go HERE to download the manual you need and good Luck and let us know how this repair turns out.