Re: Notes from my journey to Beijing & visiting Canaan Creative in March 10-15, 2018
I love the technician Certification program Canaan are running, great that Avalon's actually being extremely transparent with their machines and they're willing to actually certify people to repair machines instead of a MyRig and Bitmain Warranty repair service (with some people like Lightfoot, of course) on Bitmain's side, and that they're actually concerned about customer satisfaction unlike Bitmain. This only increases my trust in Canaan, and I'm personally interested in how to troubleshoot and possibly repair these things now. 
I concur but with 1 caveat: I would not exactly call it 'certify people to repair machines'. To me 'repair' means able to do component-level diagnosis/replacement by having a fairly deep understanding of the circuits involved. Part of that being knowing locations of test points and voltages/signals to be expected at them. API's may relay a lot of information but hardware test points can present a lot more.
What they are so far offering is the information needed to diagnose problem areas and then do module replacement to get it running again. Certainly works and considering the skills needed to do depot-level board repairs makes it doubtful even a large farm would do in-house board repairs when the miners are modular by-design. As long as Canaan provides timely stocking/delivery of needed modules, with the 2-year warranty I certainly am not going to complain!