Samsung HPS5053 Clicking only when logic board is connected

I have a Samsung HP-S5053 TV that consistently clicks on and off, but only when the “logic main board” (the T-con board) is connected. I have checked the X and Y boards for problems, and I have tried with every wire disconnected from the logic main board as well as trying a new power supply. The TV just clicks on and off.

What’s strange is that the second the logic main board is unplugged, the TV turns on normally, but with no picture. The startup noise plays, and the sound works. I also tried unplugging the Y and X boards from the power supply and it makes no difference when the logic main board is plugged in, it just clicks.

I also purchased the logic main board online but the new one still exhibits the same exact behavior.

Is there anything else I can try or is this TV just junk?