I had someone else fix them for me after that, and that person is no longer available, so all I can do is watch those gears sit there do nothing.
If you want to sell any of your dead gear instead of watching it do nothing, shoot me a PM. Shipping might be too expensive to make it worth it, but maybe not.
Not sure how commercial places are making money repairing these. Hmtech charges $40 diagnosis + $150/hashboard for "basic" repair, $300/hashboard for "advanced" repair. I'm sure their techs are way more skilled than me, but I wonder if they would repair the board from my last post for $300 or if they'd just say it's not repairable. It's possible it could need $100 worth of replacement chips.
So far, every board I've fixed has taken more than 8 hours of work. The S17+ that I repaired took ~24 hours of work, although that was the first S17+ for me so there was some learning curve on that one.
I also found on the S17+ that chips will come up with the heatsink when trying to just remove the heatsink. So just pulling heatsinks to get access to repair other chips can cause other issues.
I have 2 units that are sometimes working, sometimes not. S17 Pro and S17+. One has dead hashboard (exactly one loose heatsink) while all 5 other hashboards sometimes work. Where are you from and would you try to repair them or want to buy 'em out?