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Lines show on TV then it powers down.

These lines appear anywhere from seconds to minutes after the TV is powered on. Then it shuts off. Any suggestions for a DIY fix. I work for a hotel and we don't want to have to pay a TV repair company.

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Hey Grady, does the TV do this on all inputs? I'm curious if this might be an issue with the cable. Although the TV powering off makes me think otherwise.

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Only on the TV input. And when I change inputs I can no longer go back to TV.

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@acraftyhippo what model is your TV?

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The model is 32HFL5860D/27. It's a hospitality TV. The issue only shows on the TV input for coaxial. If I change the input the problem does not persist but I cannot return to the TV input.

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Out of curiosity, @acraftyhippo, have you tried using a different coax cable, and with that a different wall port?

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@acraftyhippo could be a main board, t-con board or even panel. I’d be looking at the t-con board first. Explain this a bit better “Only on the TV input. And when I change inputs I can no longer go back to TV. “ That sounds like it does not show on other video input sources?

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Grady sera éternellement reconnaissant.
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