Hi All
I have removed the three S7 boards and all 'look' ok, i have tried them in a good miner, but get the same result, all asic chips are fine, temps are fine but i do not get ny hashrate.
At this moment in time ONLY Bitmain.com (the main supplier) offers repairs only to the boards, with a super quick turn around and it is runoured to be a VERY simple fix, mine failed after one of the 2 fans (input/output) stopped and it overheated.
The first thing i looked at was the capacitors.
High temp 16v, 1000uF.
S7 Capacitor by Leighton Kappen, on Flickr
There is also a smaller cap above it but gtting schematic for the PCB is impossible !!!
I have 4 faulty boards each with 4 of these capacitors.
I have not got a dedicated capacitor tester, but using a Multimeter i get -
Capacitors 1,2,3 and 4 in same location on each board -
1- 33.8ohm, 33.7ohm, 2.2Mohm and falling, 1.4MO and falling.
2- 55.5, 55.9, 2.4MO and falling, 1.9MO and falling.
3- 60.8, 61.1, 2.3MO and falling, 1.95MO and falling
4- did not test as still in machine..
What do you reckon guys ??
I'm more of an industrial spark where we would just replace the board, no matter of cost....
Cheers
I have removed the three S7 boards and all 'look' ok, i have tried them in a good miner, but get the same result, all asic chips are fine, temps are fine but i do not get ny hashrate.
At this moment in time ONLY Bitmain.com (the main supplier) offers repairs only to the boards, with a super quick turn around and it is runoured to be a VERY simple fix, mine failed after one of the 2 fans (input/output) stopped and it overheated.
The first thing i looked at was the capacitors.
High temp 16v, 1000uF.
S7 Capacitor by Leighton Kappen, on Flickr
There is also a smaller cap above it but gtting schematic for the PCB is impossible !!!
I have 4 faulty boards each with 4 of these capacitors.
I have not got a dedicated capacitor tester, but using a Multimeter i get -
Capacitors 1,2,3 and 4 in same location on each board -
1- 33.8ohm, 33.7ohm, 2.2Mohm and falling, 1.4MO and falling.
2- 55.5, 55.9, 2.4MO and falling, 1.9MO and falling.
3- 60.8, 61.1, 2.3MO and falling, 1.95MO and falling
4- did not test as still in machine..
What do you reckon guys ??
I'm more of an industrial spark where we would just replace the board, no matter of cost....
Cheers