Hi All,

Really need some help. I bought a antminer A3 off e-bay and the previous owner overclocked it. I've been running it off 110v for the past few days until I had 220v installed in my house yesterday. A couple of times since I've been running it, I noticed that the hashing would go down on certain boards and then go back up...and it cycled through the boards like this (going up and going down). Once I got xxx's across board 2 but, when I restarted the A3, they went away and things were working again like normal. Until this morning...

The A3 kept cycling through again (board 1 would go down to like 5/gh/s and then go back up, and then board 2 would go down while board one went up, then board 3...and so on). One board started showing 1-2 x's and then they all went to x's. But then within 2-3 minutes the x's went away. But it was still cycling through going up and down on hash rate. Since I have Awesome Miner I tried to reset it a couple of times remotely and I even restored it to factory settings. At first, it kept cycling through like I mentioned above but then, all of the sudden it started working again (up to 825 gh/s). And it's held speed that for a while.

All temps are OK - it's all very cool right now.

Any idea what would cause this? Is it a PSU issue or board issue?