Whenever I start up my Antimer S7, it starts fine (at least I think). It takes a little while for it to go online, but the online miner control panel works fine. The only thing that doesn't work are the 2 hash boards, and the odd fan behavior. The first hash board works fine, but under performs heavily. It should be doing something like 1TH/s, but it only does 150GH/s (Shown in the image linked below). And for the other 2 boards, they don't work at all. I only have 1 screenshot to show, I'm a noob at this so I don't know what else to put. If you ask, I can most likely get a screenshot of it for you.
Image link (imgur) : https://imgur.com/a/hgeC0z7

P.S. for anyone saying that the Antminer S7 is outdated and inefficient, and that I should just get a newer one, I'd rather have problems like these with a 70$ beater miner, and gain some experience fixing it, than having these problems with a 500$ miner.