Question Samsung 4K tv showing nothing but blue lines and snow - see pic


Mar 14, 2013
I'm no expert in tv repair, so I'm sorry if this isn't in the right place, but I searched for my issue and couldn't find anything.

I have a Samsung UN65JU640DF that has suddenly started showing nothing but blue lines and blue snow. Here is a pic:

View Image

As you can see the CC is perfectly visible above the blue screen and isn't affected by it. I read somewhere to replace the main board, which I found online, but that seemed to be the answer to every issue on that particular site so I thought I should check with this expert group first. Any thoughts or input? I greatly appreciate you taking the time - cheers.
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