We found out that dropping the SP20 package may cause the boards to shift.
We got complaints from about 2% of non palletes customers. Most of the units can be fixed at home by replacing the boards.
We halt individual package shipments for one week, until we'll solve the issue.
If you got such SP20, contact support@ for miner assembly guide. If the SP20 was actually damaged, we'll RMA.
Guy
Hi. I got my miner November 7th. Got it all plugged in and the 2nd board would cause a halt in cgminer. Miner would not hash. Eventually, I disabled all the ASICS on the 2nd board, and the miner would hash with only the first module.
Noticed that the boards sat at an angle inside the case, so I opened it up and re-aligned. The boards are not screwed in or secured with anything except some grooves raised up from the enclosure. Pretty cheap design, which is prone to board shifting if handled rough in transit.
After re-aligning, I manually enabled and disabled each ASIC on board 2, and figured out that ASIC 4 will not work under any voltage, the other ASICs on the board work fine. Getting 1300 GH/s with 7 ASICS...so not too bad at max 225w per module setting. I'll turn up the juice once all the problems have been worked out, hopefully.
Got an e-mail tonight from Barbara saying they will refund 0.12 BTC because the SP20s shipped late. I'm cool with that, so I thanked her and also told her to forward my diagnosis to tech support. Also filed a form for tech support asking for directions as to how to proceed. Requested they send me a replacement board.
I'd rather not ship the whole thing back and lose hashing time. I can do major surgery on just about any electronic device without a problem.
I have an SP10 Dawson also that has been going without a problem for months now. I can't really say I'm impressed with the SP20, because I'm so far pretty underwhelmed.
Firmware is still 2.5.6, not really sure about any other versions. Hopefully they will get all the bugs worked out soon.
Yup, I'm facing the exact same issue as you with the warped board. Barbara has also replied to my earlier email which included pictures of the board when I unpacked it saying that they are looking into it. Let's hope they are able to get back with a fix.