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I totally agree with this!
Also, when talking about luck... Imagine this (my story):
Getting S17 Pro (first batch) and all 3 hashboard end up failing after 2-3 months. Not too bad, I can still RMA it as it is in warranty, won't cost me a lot (excluding time and shipping costs). I get new S17 Pro (after some problems with my government) and it ends up (after 1-2 months) with 2 dead hashboards and one popping up from time to time. Now I am a bit angry... It's same problem all over again, but now I am ready! I can avoid problems with my government and I hope price of fixing my gear will not be too high...
Lucky me it cost me ~$150 in shipping and $55 for repair cost. BUT, due to stupidity of my government and problems with pandemic, I had to pay VAT (20%) for the third time FOR SAME MACHINE, and lost about 5 months of mining only in waiting for shipment and government to decide wtf they want.
And that is the first unit ever I had problems with. I ordered:
- 20-30 S9s and all of them are still working (not for me however)
- 1 S15 still working (not for me)
- 2 T17+ still working (not for me)
- 5 T17e still working (not for me)
- 5 S17 Pro (1 had the problem I explained above and other 4 are working, but not for me)
- S17+ and S17e (still working and in my possession)
- 6 Z11 (still working but only 1 is in my possession).
Also, of all the PSUs I ordered, none had failed so far (ordered between 30-50 APW3+ and APW7)
So, that is quite a low failure rate for me, but it cost me a lot anyway.