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Gray virtical lines over picture, comes and goes every few seconds

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Gray lines over picture on whole screen comes and goes every few seconds. It's a 55 inch lg 4K tv, picture goes from perfect to ghost gray lines over picture covering whole screen then to clear again and so on and so one tried to reset to factory, did picture test,

Update (09/26/2017)

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Thank you for answering me back! Here is a picture, it goes in and out and isn't steady, it's a shame because it's only a few months old and I had it registered for a warrenty however my receipt is worn down to nothing and can't see my proof of purchase so looks like I will be attempting a fix of this on my own sadly!

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@autumnbano could be a T-con error as well as a panel error. You do want to go ahead and take some pictures etc. of what the screen looks like. It might help if we can see what you see. Use this guide Adding images to an existing question for that. We also need to know the exact model of yourTV.

Update (09/27/2017)

That does look like a panel error. Since it is only a few months old your manufacturers warranty will still cover it, even without a receipt.

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