Chosen Solution
i have this lg tv with this problem i start the tv the red led is flashing 3 times and the back light comes on but the lg logo do not .so no picture comes on.i replaced the main board because the tcon is on the main board but it did not help i get the same problem.i checked all the voltages and they are ok. cant figure what is the problem?
@shopy since you already replaced the main board the next board is the power board that will be the culprit. Post some images of your power board with your question so we can see what you see. Use this guide for that. It will allow us to see what you see. Of course, we still need to know the exact model number for your TV.
