When i turn on the machine, it emits a lound and constant screeching noise! And the display shows nothing but boxes! It doest not load up the menu… I think it may have to do with a dead cooling fan… the cooling fan attached to the control board does not turn on when the machines turns on. It also may have suffered some heat damage due to being close to the heatwd bed, which for some reason was running at 60 °C. I hope it isn’t something more significant than the fan. Secondly, are these control boards arduino based? If the problem is something bigger, it seems like it could be an easy fix if the hardware is arduino based. The firmware can’t be that complicated either. I have tried contacting our reseller with no success as of yet! Any community help would be great. Thanks!