Chosen Solution

Hello! This concerns a Samsung un55ks800df 55in TV, not the one that ifixit let me choose. I also had a post that I marked solved because I thought we’d figured out the problem. You can find that here: Screen doesn’t power on, flickers on and off, is it possible to repair However I just changed out the mainboard with the other one I received and the problem still persists. Would that suggest the power board or the backlight perhaps? Is this still fixable maybe? I appreciate anyone who can help!

@johndough12 that hot glue to stabilize the heavier ones while in motion. Can you get better pictures of the following?

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