I just received my 1st Avalon 821 today but I can't get it to stay powered up.

I have tried two (2) different and brand new out of the box power supplies, albeit Bitmi.. AW3++s.

With each of the power supplies, it only runs for about 20-30 seconds before shutting down.

I have it setup just like my other 5 -741s. It is on a separate controller and the only Avalon in it.

No issues with the 220v supply.

I know this is not the hardware section, but I also know some of you are very knowledgeable with these type of issues.

I would like to my Th up another 11THs so I can close in on the 100THs (or at least into the 90s).

Any ideas?

Thanks