My S7 is not running anymore after 2 Days of working fine.
I have changed PSU(Bitmain Brand) from a working S7 already and also made reset.
I Don't get any reply from bitmain.
Any Ideas ?
http://schnaldi.myds.me/kernel_log.txtIn China there is Holidays till 8th, so you won't get a reply earlier. Forgot to tell you on the phone yesterday.
i had the same problem with one of my S5, the controller doesn`t see the asics, try swithing the controller with your other s7, my guess is that`s it`s your controller having problems.
Just managed to hold two S7 close together in a lateral way. So I plugged at least one Hashboard from the non-working device in the controller of the working and did the same with the fans.
The hashboard works like a charm on the external board.
This shows it is a solely controller Problem.
The first line that is different in the Kernel Log from the good S7 shows this:
[ 32.449393] clear FPGA nonce buffer
[ 32.459979] clear FPGA nonce buffer errBitmain new S5, s5+ and S7 devices have this algo but older versions has not. Because we cant plug another miner to same Controller PCB Board before.
we can see;
[ 32.449393] clear FPGA nonce buffer
[ 32.459979] clear FPGA nonce buffer err
[ 33.462790] soft ctrl rst time
[ 33.466086] reset hash asic
[ 33.469020] clear FPGA nonce buffer
[ 33.479226] clear FPGA nonce buffer err
[ 34.581939] get
chain0 reg0x0
[ 34.585073] send BC data:
[ 34.585073] 0x0000: 0x03
0x00 0x00 0x1a 0x84 0x00 0x00 0x11
[ 34.691383]
chain0 total asic:0[ 34.694695] get
chain2 reg0x0
[ 34.697802] send BC data:
[ 34.697802] 0x0000: 0x03
0x02 0x00 0x1a 0x84 0x00 0x00 0x11
[ 34.804652]
chain2 total asic:0[ 34.807949] get
chain5 reg0x0
[ 34.811050] send BC data:
[ 34.811050] 0x0000: 0x03
0x05 0x00 0x1a 0x84 0x00 0x00 0x11
[ 34.917936]
chain5 total asic:0[ 34.921242] total chain_num{3}
<-------------FPGA chain seek sucsess but where is bmchips, answer :bmchips saved in old(previus boot)data
[ 34.924435] FPGA detect asic addr err
-first reason is: your hashboard cables position is wrong on fpga board(ctrl board) look at chain numbers 0-2-5 (this pattern is confused)
-second and bad one: FPGA software has bug
now how can we correct this bug and work:
-put your chain cables into correct position (chinees workers maybe put wrong or you)
-if not work, look kernel log and take a picture of cables, close the miner, power it, reset factory defaults, close again(this is
DANGEROUS!), power up again. now i think fpga registers knows your hash boards with a new id.
Note: i dont have any S7 
, my solutions are totaly experimental from Kernel Logs and my electronic skills. 
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