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Why myTCL flashes a few times then and works a few days later nothing

Why does my TCL flash of an on a few times then works then a few days later nothing

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Can you take the back of the TV and upload pictures of the circuit boards inside? Adding images to an existing question

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@dexter123 what flashes off and on? Your screen? IF so and with this being a TCL Is have a pre-conceived idea that this is about the backlight :-) Anyhow, give us a bit more background and the full model number.

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