3
One of the loops on my Spondoolies SP20 is misbehaving. I underclocked everything but this loop (number 4) does not seem to care what settings I make. It seems to be running at twice the speed (and wattage) at times.
Why is this?

Transcription:
Asic Stats
Uptime:502 | FPGA ver:100
-----BOARD-0-----
PSU[UNKNOWN]: 0->120w[120 120 120] (->120w[120 120 120]) (lim=120) 0c cooling:0/0x0
-----BOARD-1-----
PSU[UNKNOWN]: 0->120,[120 120 120] (->120w(120 120 120]) (lim=120) 0c cooling:0/0x0
-----BOARD-2-----
PSU[UNKNOWN]: 0->121w(121 121 121] (->121w(121 121 121]) (lim=120) 0c cooling:0/0x0
-----BOARD-3-----
PSU[UNKNOWN]: 0->194w[193 193 194] (->194w(193 193 194]) (lim=120) 0c cooling:0/0x0
LOOP(0) ON
0: DC2DC/1/:[vlt1:605 vlt2:610(DC1:794 T1:794 U1:727) 46W 76A 41c] ASIC:( 85c (125c) 670hz(BL: 670) 17 (E:192) F:8]
1: DC2DC/1/:[vlt1:605 vlt2:610(0C1:794 T1:794 U1:727) 44W 72A 48c] ASIC:[ 85c (125c) 645hz(BL: 645) 15 (E:192) F:0]
LOOP[1] ON
2: DC2DC/1/:(vlt1:593 vlt2:597(DC1:794 T1:794 U1:727) 43W 73A 53c] ASIC:[ 85c (125c) 640hz(BL: 640) 9 (E:193) F:0]
3: DC2DC/1/:(vlt1:593 vlt2:597(DC1:794 T1:794 U1:727) 47W 79A 56C] ASIC:[ 85c (125c) 675hz(BL: 675) 17 (E:192) F:8]
LOOP[2] ON
4: DC2DC/1/:(vlt1:599 vlt2:605(DC1:794 T1:794 U1:727) 45W 75A 41c] ASIC:[ 85c (225c) 660hz(BL: 660) 18 (E:193) F:0]
5: DC2DC/1/:(vlt1:601 vlt2:605(DC1:794 T1:794 U1:727) 46W 76A 52c] ASIC:[ 85c (225c) 675hz(BL: 675) 15 (E:193) F:0]
LOOP[3] ON
6: DC2DC/1/:(vlt1:654 vlt2:658(DC1:794 T1:794 U1:727) 74W 113A 68c] ASIC:[ 85c (125c) 895hz(BL: 895) 30 (E:192) F:0]
7: DC2DC/1/:[vlt1:654 vlt2:658(DC1:794 T1:794 U1:727) 75W 114A 77c] ASIC:[100c (125c) 905hz(BL: 905) 23 (E:193) F:0]
[H:HW:1112GH,W:423,L:0,A:8,MMtmp:0 TMP:(28)=>=>=>(49,64)]
Pushed 28 jobs , in NW queue 4 jobs (sw:0, hw:0)!
min:14 wins:144[this/last min:6/18] bist-fail:253, hw-err:1
leading-zeroes:42 idle promils[s/m]:0/0, rate:1258gh/s asic-count:80 (wins:3+3)
Fan:70, conseq:200
AC2DC BAD: 0 0
R/NR: 487/0
RTF asics: 0
FET: 0:9 1:9
0 restarted 0 reset 0 reset2 0 fake_wins
0 stuck_bist 0 low_power 0 stuck_pll 0 runtime_dsble
0 purge_queue 0 read_timeouts 0 dc2dc_i2c 0 read_tmout2 0 read_crptn
0 purge_queue3 0 bad_idle
0 err_murata
Adapter queues: rsp=2, req=20
EDIT: I have found out how to get rid of the problem: Setting the start volt 0.05 below max. voltage on all loops seems to have made it more stable and the problem vanished... I still don´t know how it came about but at least I found a workaround :)
1What miner software are you using? – Nick ODell – 2015-01-10T01:11:13.223
CGMiner as part of the original software on the SP20 – Foxy – 2015-01-10T05:14:26.303
3@Foxy, I'm glad you've found the solution. If you answer your own question and mark the question as answered, it would help anyone else who had this problem find the answer quickly. – morsecoder – 2015-01-10T16:07:09.070