u/BlahhBlahhBlahh27

Trying to repair my Samsung Q800T. One day the screen just wouldn’t turn on and I heard a clicking sound coming from the power supply board. After some research, found a blog with a similar issue. They unplugged the main board from the power board and the screen lit up, which mine did as well. Ordered a used board and but I am still getting the same issue. Could is be a defective board? Or another issue? I’ve attach a picture with the main board disconnected and the lights on through the frame. FWIW, I got the used board from TVPARTSTODAY