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Televisions made by the Chinese multinational electronics company, TCL.

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What is this and how do I fix it?

Does anyone know what this is??? It's just a perfect bar across my TV screen and it's driving me nuts! I'm used to the normal pixel dying but I've never had one look like this it's just perfectly down the center and all crisp lines? It does it no matter what and I've tried adjusting the picture but it never goes away.

Update (04/07/2021)

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This shouldn’t be a dead pixel problem here because the image still comes through behind it, but it’s not uncommun for entire lines to fail or even a bigger section like here.

First thing I would test is whether it happens with multiple sources or cables. If it doesn’t, then your TV is not the issue. You can also try to run a self diagnosis if your TV has it or attempt a factory reset.

Final thing to try is to apply some gentle pressure on the area where the bar appears to try and unstuck it.

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Ahoy Zeldie ;

Not knowing anything about this ‘Chinese’ TV , regardless if it is plasma or led it would appear one of the multiplexing chips on the board across the bottom has gone bad . A re-seat of the ribbon connectors may help . It could also be a problem in the main board . Too bad you dont have a set to swap boards to for sure pinpoint culprit . Check for loose mounting screws for board to chassis .

If there is a service shop you can reach that services these they could swap out or UNLIKELY have the service jigs and diags to tell them which board .

The screen appears fine BUT there is a small chance it is a failed mating of ribbon cable to screen matrix .

I would hate to spend any money on that set when you could go to Walmart clearance and get a large set for less than 300 $cdn

Luck

Hugh

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