I have a cube that is unstable. It will mine for (up to) some hours and then go all-x. I made my RPi monitor the cube status and reboot it if all-x occurred. I tried several PSUs so that is ruled out. It will mine for shorter time (two minutes only) if I move the cube to a colder room (+10C). Any ideas? I guess there is a faulty board that messes it up?

-knus-