I stupidly bought 2 of these machines earlier this year.

Using Ghash.io pool.

THey will hash for a little while at 3th (ish) but after a random amount of time most of the boards will disappear from the status screen and the overall rate will be in the hundreds of ghs. Reboot and they work again for a while. I contacted them and they said the problem was the controllers and they sent me out two more.

The controllers are block eruptor controllers. BE200 Jet Stratum Miner V 5.47

So they sat in my garage powered down paper weights, Untill i decided to try again. I had thought perhaps its the PSU in the machines, so I have used an IBM bladecenter 2880W PSU. Same results.

Has anybody had any luck with these machines ?

Is it possible to run them from a Raspberry PI instead ? Im guessing this would need some kind of adapter.

I wish id never bought the damn machines and it will be a cold day in hell before I ever use them again.

changing frequency has no effect they will has just as (well?) at 240 or 280mhz.

I have read its possible to upgrade the firmware on the block eruptor controller units ? can anyone point me in the right direction please ?

The machines are a server room with proper aircon. Temp is not an issue.

thanks