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skr e3 v2 - board red light flashes when power on and off, hotend fan working.

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Hello friends.
Your videos are great and they help me a lot, but today I need some direct help, I recently bought a skr mini 3 v2 and it stays with the lcd on without any information, when I turn on the power button, it shows a red led on the board and soon it goes out, you can keep the hotend coller on, I've tried to upgrade by the sd card and nothing, and I've tried with all the .bin files I found, when I connect the USB there is no sound signal that it was connected but the lcd stays on.
I don't know what else to do, I searched about resetting the bootload with arduino and found nothing.

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