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There could be many reasons why your screen flickers black. It depends on which screen, your TV, computer or phone. Your TV may flicker black because the picture is going bad. It could also be a a signal issue from your cable or satellite company. If it is your phone, there may be water damage, or some other damage. If it is your computer it can be the same thing as the TV. The picture may be bad, or the power supply isn't connected properly. You can call your cable or phone comapnies, or the manufacturer for your product to get help.

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12y ago

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