Hi folks,

I'm having a really bizarre situation happen with my 3 Antminer S7 Batch 7 units. This morning all three of them were blinking and beeping, but then they started working again with no problem. Just for good measure, I unplugged them and plugged them back in about an hour later.

7 hours later, I check on them and discover that all 3 units are having problems with Chain 1 and 3.

Before you blame the PSU, let me tell you my setup:

3 S7 Batch 7
3 S7 batch 8
3 IBM 2880 PSU with Jabberwock mods

I have 1 batch 7 match a single PSU with 1 batch 8. Hence, Each PSU has a batch 7 and 8 connected to each other, and that's it. In other words, each batch 7 is connected to a completely separate PSU, yet all three of them have issues with chain 1 and 3.... each one.

Can any of you guys help me figure this out? Since it happened to all three (and the batch 8's connected to the PSU are running perfectly), what could be the problem? What are the odds that all three are having the same exact issue, on the same exact chain, while the other batch 8 units are running perfectly?