On one of my Samsung tvs it was the video card that went bad. When I was thinking about fixing it, I read up on it and it was
a common issue. The video card was expensive enough and I was pissed enough to give $20 to Best Buy to trash the damn thing. My other Samsung TV is a DLP that the lamp went out on the first year I had it. I replaced it for like $60 and its been relegated to our gameroom tv that doesn’t get much use.
I replaced two motherboards on our Samsung fridge, and finally gave up. Our main TV is a 70” and fridge in the kitchen are both LG. Haven’t had a problem with either except for a minor icemake issue related to scale in our water that I was able to fix.

BKB