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Pièces & Outils

Repair and disassembly information for the Samsung 55" UHD television with model numbers UN55MU6290xxxx. Released in 2017.

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TV wont turn on no standby light

My Samsung TV won't turn on its actually the un55mu6300 no standby light I replaced the power board and the main board and it still won't power on. This happened after a thunderstorm power outage. Anyone? If not power board or main board what can it be. Also the backlight turns on when the main board is disconnected from powersupply

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seangosner this”backlight turns on when the main board is disconnected from powersupply “ in general means the issue is the main board but since you already replaced both, I would suggest that you measure the voltage on the connector between your power board and the main board. Let’s see if this turns on since there may be a possibility of a bad P-function board. Take some good pictures of all of your boards and the interconnect wiring between them . that way we can see what you see and try to assist you further.

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I personally doubt it that a lightning or thunderstorm could damage the TV screen/panel. If by disconnecting your power from main the backlight turns on, then you must be having problems with main board.

Now, you must order the exact replacement, you can not order a main board based on model number only. You must match the number that is printed on your board next to the barcode.

For example: we have lots of main boards in-stock for UN55MU6300 with part number BN94-12037A. If you board show this number please purchase from our site. Our boards are tested and are sold with warranty.

Hope you can fix your TV!

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seangosner sera éternellement reconnaissant.
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