I know you guys are talking economics, but I'm still wondering if anyone has had any issues with the Fan being at 0 RPM. I'm assuming it's the controller board. Bitmain wants me to ship the whole machine back, but at these current LTC prices, not really worth the shipping fee. A new controller board from Bitmain is $60. I've tried swapping out with different fans, but no luck. I only have one L3+, so I can't swap out with a different controller board. I do have an A3 that I've switched off. Maybe I can use that controller board? Thanks.