Power cycling issue Samsung TV QN75Q7FNAF
Currently have a Samsung 75in TV (QN75Q7FNAF), but it seems to have a power cycling issue I believe, it turns on and off repeatedly and stays on like a min or two but no display. It makes a sound when starting up when you click a button on the samsung remote but nothing else. I think the backlights are fine cuz you can kinda see it working when its powered on. I haven’t tried replacing the mainboard/power supply, but could replacing one of those fix the issue? I think it would be more likely the mainboard but not entirely sure or could it be a cable that malfunctioned?