My TV is an LG 60pv400-ub I got hit in a power surge a while back. All it does when I plug it in is click once and stays in standby mode. It doesn't click or even try to power up when I hit the power button.
I've done weeks worth of research on how to fix it and I think I've narrowed it down to the main board. Here is what I have tried so far.
I grabbed a voltage meter. I measured the volts going to the main board. They all checked out. I checked the fuses on the power supply. None of them are blown. I looked at all the caps on resisters throughout the boards and they all seem fine. I removed the power board and main board and inspected them thoroughly and didn't find any burns or blown caps.
I started unplugging the boards one by one to see which was the problem. All was the same except for when I unplugged the main board. With the main board unplugged the TV comes on and the screen stays lit up but dark, and I noticed the led on the logic board was flashing. There is a slight hum coming from the left side. I tested the vs and va volts with it unplugged and they were spot on. Once I plug the main board back in it does the standby no power thing.
Does anyone have any suggestions on confirming that the main board is the problem before I commit to buying a new one?
I've done weeks worth of research on how to fix it and I think I've narrowed it down to the main board. Here is what I have tried so far.
I grabbed a voltage meter. I measured the volts going to the main board. They all checked out. I checked the fuses on the power supply. None of them are blown. I looked at all the caps on resisters throughout the boards and they all seem fine. I removed the power board and main board and inspected them thoroughly and didn't find any burns or blown caps.
I started unplugging the boards one by one to see which was the problem. All was the same except for when I unplugged the main board. With the main board unplugged the TV comes on and the screen stays lit up but dark, and I noticed the led on the logic board was flashing. There is a slight hum coming from the left side. I tested the vs and va volts with it unplugged and they were spot on. Once I plug the main board back in it does the standby no power thing.
Does anyone have any suggestions on confirming that the main board is the problem before I commit to buying a new one?
