Hi all, been reading a lot of posts about similar problems to mine regarding error codes and get confused about how to count the light patterns.
My original problem can be seen in Pic1 & Pic2. I thought a T-Con problem at first but a replacement board produced the same results. Purchased a Main board off eBay and the problem went away, had a perfect picture (for a day). Powered on the next day and ran perfect for 15 minutes then went into error code after 3 power cycles. Error is OPC and Power blink once together then Power blinks another 2 times and then the whole blink sequence repeats itself.
I have the service manual for this model TV. Is the error a Power Failure (Power LED flashes twice and OPC LED flashes) or Communication failure (Power LED flashes three times and OPC LED flashes)? I suspect Power failure D_POW based on the voltage readings but in some posts all the Power LED flashes are counted and in others only the Power LED flashes after the OPC and Power flash together are counted.
I didn't take voltage readings until the replacement Main board started to fault. The voltage readings at startup at the respective connectors on the Main replacement board are:
P9701 (PH)
Pin 1: 5.9v 6V
Pin 2: 0.0v GND
Pin 3: 0.0v PNL 12V
Pin 4: 0.0v PNL 12V
Pin 5: 0.0v GND
Pin 6: 0.0v GND
Pin 7: 9.8v 10V
Pin 8: 9.8v 10V
Pin 9: 0.0v GND
Pin 10: 0.0v GND
Pin 11: 13.1v AMP 13V
Pin 12: 13.1v AMP 13V
P9702 (PD)
Pin 1: 2.9v PS_ON
Pin 2: 3.1v AC_DET
Pin 3: 0.0v GND
Pin 4: 0.0v PNL_POW
Pin 5: 5.0v BU5V
Pin 6: 0.0v GND
When I replaced the Main board with the original Main board the voltage readings were the same as above but P9701 Pin 3&4 were 11.8v each and P9702 Pin 4 was 3.3v which is why I have picture albeit with the vertical lines.
Pic 3: Board Layout (all original boards)
Pic 4: Main board purchased off eBay
Pic 5: Power supply board (original)
So, I have vertical lines in my picture with the original Main board and no picture with the replacement Main board. If anyone can point to further troubleshooting in either scenario it would be appreciated.
Merry Christmas to all and Happy New Year!
My original problem can be seen in Pic1 & Pic2. I thought a T-Con problem at first but a replacement board produced the same results. Purchased a Main board off eBay and the problem went away, had a perfect picture (for a day). Powered on the next day and ran perfect for 15 minutes then went into error code after 3 power cycles. Error is OPC and Power blink once together then Power blinks another 2 times and then the whole blink sequence repeats itself.
I have the service manual for this model TV. Is the error a Power Failure (Power LED flashes twice and OPC LED flashes) or Communication failure (Power LED flashes three times and OPC LED flashes)? I suspect Power failure D_POW based on the voltage readings but in some posts all the Power LED flashes are counted and in others only the Power LED flashes after the OPC and Power flash together are counted.
I didn't take voltage readings until the replacement Main board started to fault. The voltage readings at startup at the respective connectors on the Main replacement board are:
P9701 (PH)
Pin 1: 5.9v 6V
Pin 2: 0.0v GND
Pin 3: 0.0v PNL 12V
Pin 4: 0.0v PNL 12V
Pin 5: 0.0v GND
Pin 6: 0.0v GND
Pin 7: 9.8v 10V
Pin 8: 9.8v 10V
Pin 9: 0.0v GND
Pin 10: 0.0v GND
Pin 11: 13.1v AMP 13V
Pin 12: 13.1v AMP 13V
P9702 (PD)
Pin 1: 2.9v PS_ON
Pin 2: 3.1v AC_DET
Pin 3: 0.0v GND
Pin 4: 0.0v PNL_POW
Pin 5: 5.0v BU5V
Pin 6: 0.0v GND
When I replaced the Main board with the original Main board the voltage readings were the same as above but P9701 Pin 3&4 were 11.8v each and P9702 Pin 4 was 3.3v which is why I have picture albeit with the vertical lines.
Pic 3: Board Layout (all original boards)
Pic 4: Main board purchased off eBay
Pic 5: Power supply board (original)
So, I have vertical lines in my picture with the original Main board and no picture with the replacement Main board. If anyone can point to further troubleshooting in either scenario it would be appreciated.
Merry Christmas to all and Happy New Year!
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