wasn't there 2 "board problems", "substrate" issues were present after the redesign i thought? hence why they didn't ship batch 1 barely. and the ones that did ship failed within the first 20 days or so? Does anyone even have a functional babyjet/sierra still that didn't need to be sent back for repair?
No, you don't know what you are talking about, and given the knowledge you showed about other issues I can't believe that to be anything but a faked ignorance.
If someone wants to lose time reading the personal attacks he throw out before realising how pathetic he was and deleting his own post, because even for a troller, it would have been counter productive:
https://bitcointa.lk/threads/hashfast-announces-specs-for-new-asic-400gh-s.153922/page-473#post-6477533