55” TCL smart tv model 55s403

Ancv42

Novice Member
If anyone can help please.. I replaced the led strips on my tv. When I turn on now after a few minutes the picture fades away but it still has backlight.. I did damage the lcd panel on top left corner so I have line across too of screen as well but still has picture.. if anyone can tell me why picture fades away after a few minutes please.. I did reset tv and unplugged for awhile but after I turn on it has a picture but then fades away again.. thank you in advance
 

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