Quote from: VirosaGITS on January 30, 2016, 09:13:21 PM

Quote from: OregonMines.com on January 30, 2016, 08:42:32 AM

Quote from: methodlimp on January 30, 2016, 04:42:46 AM

Quote from: generalt on January 30, 2016, 04:33:48 AM

What kind of power supplies are you using?

3 IBM 2880 PSU with Jabberwock mods

The batch 7 uses: 1278 W (at the wall, with APW3, 93% efficiency, 25C ambient temp)
The batch 8 uses: 1293W + 10% (at the wall, with APW3, 93% efficiency, 25C ambient temp)

I'm pretty sure the batch 7 numbers are off, but with these numbers we're at 2571W per PSU for a platinum rated PSU.

I've been running these miners since the middle of december with no problem... until now.

The batch 8 uses: 1422W, 1293 + 129 (10%). Our results are a little higher than this.

Total watts used: 2700, if the numbers posted by Bitmain are correct.

Updating the firmware is always a good idea, read the change logs and see what others have experienced first. But will the B7's work on their own not alongside the B8's?

My B8 use 1415W at the wall, so that sound like accurate to me. I don't know if all B8 are the same, some people say it varies, which i doubt.

Why would you recommend people to update the firmware when there is no feature difference? They risk putting the wrong one and bricking their controllers for nothing.

read the change logs and see what others have experienced first

Quote from: methodlimp on February 01, 2016, 10:39:39 PM

Ok, I think I've narrowed down the problem to the controller. I've tried changing out the PCIe cables, putting the miners on the cables on the right side, and nothing worked. Then my buddy tried plugging the batch 7 into the controller on one of the batch 8 miners, and then we were able to see all of the 3 boards show up (but it wouldn't hash).

The really unfortunate thing is that the batch 8 miners will not run more than 1 miner on the same controller like the batch 1-7 miners can. Hence, I'm stuck.

Tried updating the firmware today, to no avail.

Now I'm playing the waiting game on the RMA to have a response by bitmain. I submitted the ticket on friday, and still haven't heard back today yet.

Anyone else having the batch 7 controllers fry consecutively like this?

I'm sorry we don't have much experience with the batch 7's, so I can't say much about them. Our Batch 2 and 8,9's have all been working fine.

It may take a while to receive a reply from Bitmain, they are currently on Holiday.