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Vizio M55-C2 No Video & Flashing Status Light

I have a Vizio M55-C2 TV with no video. The status light will immediately white when I power on the TV but when I press the power button it does not turn on. The light eventually will dim and then turn off temporarily and then it turns on again and starts flashing white. Still no video or any other sign of life besides this. I attached a video of the blinking lights.

I have tried unplugging it and holding the power button for 30 seconds and then plugging it back in to no avail.

Board looks good to my novice eyes..

Block Image

What could possibly be wrong here? I read up on similar issues with Vizio TVs and a common similarity is that the power light will turn on bright at first and then fade off. Mine then comes back on and starts blinking after powering on and fading off. It’s making me think power supply issues possibly are the problem

Answered! View the answer I have this problem too

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I ordered a new power supply. It’ll be here by saturday. Hopefully this fixes the issue

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Power supply did not fix the issue. Ordering main board next

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@tronke have you disconnected teh ribbon cables that go from the T-con board to the LCD driver boards? First one, then the other one. Let's see if that changes anything.

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It ended up being the main board. Power supply was fine.

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tr121 will be eternally grateful.
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