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Vertical lines over LED tv

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I moved my 50" 4k SEIKI to her house and it now has vertical lines on display. I did bend a video input connection as I took off coax antenna cable. Looked at that connection on board and it does not seem to be shorting anything.

Should I try to replace that board? Could cable connections have come loose?

There are several versions of this tv. I see all boards listed for sale from one with broken screen, but the one I damaged looks different. Could I just replace all with new (keep same screen)?

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well my seiki shows black and lines what can i do to fix it before my perents figure out

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I'm not an expert on televisions, but this looks like potential LCD damage. I see very similar lines when there is damage to an LCD in a phone or a tablet.

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there is no damage visible to screen

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The damage could come from very tiny cracks in the LCD. They may not even be visible under the glass

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Rich Hrad sera éternellement reconnaissant.
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