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Same issue here. No visible fuses on T-Con or Main board? I’m loosing voltage on standby circuit. Get a clicking noise and voltage drops out. I can unplug the main board from the power board and the clicking stops and light through the screw holes. Plug main board back in and unplug the T-Con board and it starts clicking again and no lights. So does this mean the Main board is bad or is it somerhing on the power board. The tv was hit by lightning. I believe it came in through the cable modem to the tv through the ethernet cord that was hooked up to the TV. It got my Xbox as well that was connected to the modem with a ethernet cord. But my modem was unaffected, no damage to it at al. And all 3 where on a very good electrical surge protector that didn’t trip. No hotspots on any of the boards, no bulging capacitors. Tv is a Samsung UN60D6000SFXZA version F301

@neal43 this “The tv was hit by lightning. " would lead me to believe that it is a main board issue. Post some good images of your boards with your question. That way we can see what you see. Use this guide Adding images to an existing question for that. I have not yet seen an unfused T-con board but it is of course possible. Again pictures will help.