Looking for some help troubleshooting a 741 that’s only half working.

I’ve tried multiple power supplies, all on 240v.  2x 750’s, single 1200, may have tried 2x 1200’s but I don’t remember. Tried it in a chain with others and by itself on its own controller.  Also swapped in another 741 exactly plug for plug and it works fine.

I haven’t measured voltage at the miner yet, but on the breakout boards it was reading either 12.4 or 12.6   however accurate that is.
Both boards light up green.  I haven’t taken it apart, but from what I can see of the power connectors there is no damage or bad solder joints.

I received it second hand like this so I’ve never seen it working fully.
 
I see several differences between this log and the logs of working miners, but I haven’t been able to find how to fully decipher the log.  Maybe I don’t know what to search for.

Thought I’d look for some guidance here before taking it apart to look for connections that may have come loose during shipping.  Seller claims these units were tested, but I won’t get into that here.

Do I have one dead board?

Ideas? 

Code:

[Firmware Version] => Avalon Firmware - 20170603
    luci: ffc1d59
    cgminer: 2354004
    cgminer-packages: d309c69
Reply was 'STATUS=S,When=1515627789,Code=70,Msg=CGMiner stats,Description=cgminer 4.10.0|STATS=0,ID=AV70,Elapsed=783586,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM ID1=Ver[7411706-3162860]
    DNA[013e318a7adba0a5]
    Elapsed[783582]
    MW[8667362 8667353 8667353 8667340]
    LW[34669408]
    MH[17905611 4101 0 4605]
    HW[17914317]
    DH[3.018%]
    Temp[30]
    TMax[74]
    Fan[4290]
    FanR[50%]
    Vi[1209 1209 1202 1202]
    Vo[4443 4434 0 4461]
    GHSmm[3911.50]
    WU[51268.03]
    Freq[347.26]
    PG[15]
    Led[0]
    MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW1[22766 27572 29657 29569 29059 29902 29081 29170 28907 29526 28991 29163 29273 28499 29053 29339 27269 28934 28262 29052 29558 29353]
    MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW3[31657 32604 31750 31625 32576 32851 33060 31156 31069 31944 32853 32235 33001 31854 31694 32069 31594 32303 31593 31918 32885 32855]
    TA[44]
    ECHU[768 0 768 0]
    ECMM[0]
    FM[1]
    CRC[0 0 0 22]
    PAIRS[0 0 0]
    PVT_T[0-126/0--41/-60 0-63/14-69/67 0-126/0--41/-60 21-68/16-74/71],MM Count=1,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=15548,AUC Temperature=27.96,Connection Overloaded=false,Voltage Offset=0,Nonce Mask=29,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=1,ID=POOL0,Elapsed=783586,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=2383.00000000,Min Diff=409.00000000,Max Diff=3226.00000000,Min Diff Count=67,Max Diff Count=1228,Times Sent=272861,Bytes Sent=31540643,Times Recv=301196,Bytes Recv=47130209,Net Bytes Sent=31540643,Net Bytes Recv=47130209|STATS=2,ID=POOL1,Elapsed=783586,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=5,Bytes Recv=1536,Net Bytes Sent=145,Net Bytes Recv=1536|STATS=3,ID=POOL2,Elapsed=783586,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=6,Bytes Recv=2809,Net Bytes Sent=145,Net Bytes Recv=2809|'
[STATUS] =>
(
   [STATUS] => S
   [When] => 1515627789
   [Code] => 70
   [Msg] => CGMiner stats
   [Description] => cgminer 4.10.0
)
[STATS0] =>
(
   [STATS] => 0
   [ID] => AV70
   [Elapsed] => 783586
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM ID1] => Ver[7411706-3162860]
    DNA[013e318a7adba0a5]
    Elapsed[783582]
    MW[8667362 8667353 8667353 8667340]
    LW[34669408]
    MH[17905611 4101 0 4605]
    HW[17914317]
    DH[3.018%]
    Temp[30]
    TMax[74]
    Fan[4290]
    FanR[50%]
    Vi[1209 1209 1202 1202]
    Vo[4443 4434 0 4461]
    GHSmm[3911.50]
    WU[51268.03]
    Freq[347.26]
    PG[15]
    Led[0]
    MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW1[22766 27572 29657 29569 29059 29902 29081 29170 28907 29526 28991 29163 29273 28499 29053 29339 27269 28934 28262 29052 29558 29353]
    MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW3[31657 32604 31750 31625 32576 32851 33060 31156 31069 31944 32853 32235 33001 31854 31694 32069 31594 32303 31593 31918 32885 32855]
    TA[44]
    ECHU[768 0 768 0]
    ECMM[0]
    FM[1]
    CRC[0 0 0 22]
    PAIRS[0 0 0]
    PVT_T[0-126/0--41/-60 0-63/14-69/67 0-126/0--41/-60 21-68/16-74/71]
   [MM Count] => 1
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 15548
   [AUC Temperature] => 27.96
   [Connection Overloaded] => false
   [Voltage Offset] => 0
   [Nonce Mask] => 29
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS1] =>
(
   [STATS] => 1
   [ID] => POOL0
   [Elapsed] => 783586
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 2383.00000000
   [Min Diff] => 409.00000000
   [Max Diff] => 3226.00000000
   [Min Diff Count] => 67
   [Max Diff Count] => 1228
   [Times Sent] => 272861
   [Bytes Sent] => 31540643
   [Times Recv] => 301196
   [Bytes Recv] => 47130209
   [Net Bytes Sent] => 31540643
   [Net Bytes Recv] => 47130209
)
[STATS2] =>
(
   [STATS] => 2
   [ID] => POOL1
   [Elapsed] => 783586
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 5
   [Bytes Recv] => 1536
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 1536
)
[STATS3] =>
(
   [STATS] => 3
   [ID] => POOL2
   [Elapsed] => 783586
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 6
   [Bytes Recv] => 2809
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 2809
)

[/code]

Hi everyone! 

First post and an electrical question.  I know, talk to a qualified electrician, and I will.  Seems like there are a lot of knowledgeable people here and I wanted to hear your opinions.

I want to power 3 Avalon 741’s on a single 220v line.  There is a 10ga ALUMINUM wire run maybe 40-50 ft to the main panel.  Nothing else on this line.

This place was built in the early 70’s and aluminum is what I have to work with.  It’s in a mostly finished basement and I don’t have a way to run a new line.

Capacity charts tell me 10ga AL is good for 25A.  I’m planning on putting a 20A breaker in the panel and a L6-20r on the other end.  I have a PDU that has 15A breakers for each of the 4 outlets.  Should be enough power for these three machines.

I understand most of the issues with aluminum is at connections so I will have to find breaker and outlet rated for use with aluminum.

Service entry wire is usually aluminum, right?  I know the A/C, fridge, freezers, etc. have been used in this house for decades, but I’m just worried about this continuous 24/7 load.

What do you think, good to go or will I have a BBQ?