Hi Rustover. I know its been awhile since you posted about your Samsung c7000 and the clicking problem. I'm in the process of fixing mine. I already purchased a new powerboard since the old one was a bit crispy around the fuses,thyristors, and relay near the 120 mains voltage IN, but after swapping it out for a new one, I think the main board is the culprit (or was also damaged after the surge). Did that $80 board work? I'm not paying $300 bucks for a mainboard that is probably refurbished if that 80 dollar one worked fine for you. Is the c8000 main board interchangeable with the c7000? I'd love to hear your outcome if you managed to fix it.
Later,
Syze