Zortrax m300 plus not starting - logo with green light blinking

I have a problem with my zortrax. I thought it was a table, but I bought the new one, and the problem still exists. I can not boot it. The start shows the only logo and green light blinking inside. After a few minutes logo disappears and stays on a blank screen. I checked all cable connections and disconnected all USB dongles - nothing works. I recorded a short video. Could you help me? Thank you.

Hello Piotr,

I am afraid that either the motherboard, or Android might be at fault. If you have not tried this yet - please bypass the signal adapter (step 3). Also, the USB + Camera PCB could have short-circuited:

Once you check this - please contact us via support form. We will provide further assistance.

Best regards,
Karolina