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Hi there, I bought a RepRap printer Prusa i3 clone from Amazon. I got it and when I assembled it.

It turns on perfectly and I can use the LCD Menus.

But as soon as I start a print or preheat the Hot End and Bet.

The screen and LED on the MKS MakerBase board goes crazy. Black-On-Black-On until I unplug it.

The PSU is working. I also tested the PSU under load and it works.

Here is a video of the problem:

I contacted the seller and they said that they will send a new MakerBase board.

I bought the Printer with Amazon Prime so it came to my house the same day I ordered it.

But the customer service rep says it will take 15 days for the part to arrive from China.

I want to think that it is an issue I can fix on my own while I wait for the new part.

Anyone know how to fix this?

Thanks,

Ardalan G.