you can probably rig a hardware fix for this, like some sort of resistor wired to the fan connector - all shrink wrapped up nicely of course so it thinks the fans are running. old bitmain's would keep plugging away even if it couldn't read the fan speed (I had replaced a back fan on an s1 to s3 upgrade with one that had no sensor wire and it just kind of ignored the fact that the fan wasn't sending anything back.. but that also MAY have worked because the front fan was still connected) in any case might be worth a try. Won't help much in the way of electric because it would send the same juice to the resistor as it would have to the fan, but should be able to sink the sucker. - disclaimer I've never tried this and have no idea if it would work or what would actually be best to use to trick it into thinking the fans were running.