Unofficial Spondoolies SP20 thread

[mavericklm]

your ambient is too high!

i have 34-35 Temp Front... with 31 ambient and fan on auto

[1715453462]

1715453462

[adaseb]

I have the opportunity to get these SP20s at a decent rate. Only problem is I mine in my apartment and noise is the number one concern.

Is there anyway to undervolt/underclock these SP20s so they are at the same noise level as an S2/S3 ?

[Biodom]

i can't seem to get my miner above 1.1 thz.

Asics showing 125c all the time, what should i do ? i have repasted it recently might have done a bad job ? .

Temps are around 38c / 69 c.

 

post your settings plus readings from the asic stats page

[Biodom]

I have the opportunity to get these SP20s at a decent rate. Only problem is I mine in my apartment and noise is the number one concern.

Is there anyway to undervolt/underclock these SP20s so they are at the same noise level as an S2/S3 ?

Yes, If you are willing to sacrifice some Gh in favor of lower noise. lower w/Gh is the benefit.
You can easily get to 1300GH/780-800W with fan at 20-30 or 1200-1230GH with fan at 10.
The latter setting produces a humming soft noise (~60-61dB at 1m distance) instead of 'metallic' noise at higher fan settings.
Automatic setting makes fans going up and down, so although final could get as low as setting 6, but the noise keeps changing, so fan 10 was best for me.
I have family walking around at setting 10 for many months now-not a single complaint, but they absolutely hated Sp20 at fan setting 90, similarly to unmodded S5.

[mavericklm]

I have the opportunity to get these SP20s at a decent rate. Only problem is I mine in my apartment and noise is the number one concern.

Is there anyway to undervolt/underclock these SP20s so they are at the same noise level as an S2/S3 ?

Mining Rate: 1219.76Ghs
Temp Front / Back T,B    27 °C / 70,71 °C
Fan Speed    Auto
Start Voltage    0.635 / 0.635 / 0.635 / 0.635
Max Voltage    0.64
Max Watts    280 / 280 / 280 / 280

fan is at 6%, meaning silent

[QuintLeo]

Is there anyway to undervolt/underclock these SP20s so they are at the same noise level as an S2/S3 ?

 You can't set the clock directly, it's controlled automatically by software based on other settings.

 Voltage control IS built into the SP20E interface, I would presume the same on the SP20 (not E).

 Fan speed control can be set "auto" or to specific % level in 10% steps.

 I have mine very underclocked right now to maximise profits at my very high summer electric rate - .59v start, .595 max voltage, TH and watts vary a bit usually around 800-820 TH at 360-372 watts or so, and the fan on "auto" tends to sit on a very low speed. I can't even guess at the noise level though as my SP20E is sandwitched between a pair of Antminer S5s with 3 more S5's on the next shelf down.

[Sweminer777]

i can't seem to get my miner above 1.1 thz.

Asics showing 125c all the time, what should i do ? i have repasted it recently might have done a bad job ? .

Temps are around 38c / 69 c.

 

post your settings plus readings from the asic stats page

here you go, i managed to get up to 1.3 but i would like to get it to highest hash rate possible, power is not a problem, it's currently on a 2000w 80+ server psu so there is power enough for it

[QuintLeo]

Temps are really marginal on some of those ASIC already (125c is the spec, you have 5 at 120c).
Looks like you either have the fan turned down too much, the room your SP20 is in is too hot, the fan is starting to die and not flowing it's rated airflow, or something is obstructing the airflow.

[Prelude]

I'll possibly be selling 9x SP20E soon. If anyone wants dibs, shoot me a PM.

[Biodom]

i can't seem to get my miner above 1.1 thz.

Asics showing 125c all the time, what should i do ? i have repasted it recently might have done a bad job ? .

Temps are around 38c / 69 c.

  

post your settings plus readings from the asic stats page

here you go, i managed to get up to 1.3 but i would like to get it to highest hash rate possible, power is not a problem, it's currently on a 2000w 80+ server psu so there is power enough for it

snip image

You have 47C at input-this is way too high. Temp in the room has to be at or below 35C.
This might be your main problem.
You can also try to decrease voltage to chips in a controlled fashion (in Settings pane): move down in increments of 0.005V and adjust both start voltage AND max voltage at the same time.

My settings are:

Starting voltage:
0.642 for all four

Voltage limit: 0.647

Max power-sometimes you'll need to adjust individually, but you can start with 170W for all four (in my case I ended with 165, 153, 165, 164, but after a fine tuning)
With these settings AND with 30C temp you can also adjust fan speed downward (I have fan 10), but you should only do it AFTER your ambient is better.

[ovejda]

Hello,
I have problem with one SP20E.
After 10 second of mining miner write about problem:

LOOP[2] OFF TO:0 (test serial failed)
4: disabled (serial problem)
5: disabled (serial problem)

could some one help me? I tried change PSU, nothing to change

After reboot miner give these, all is OK except of 5th board have temperature attention to 125c, but board have only 52C.
 
LOOP[2] ON TO:0 (w:2)
 4: DC2DC/1/:[vlt1:660 vlt2:661(DCl:794 Tl:794 Ul:738) 67W 101A  44c] ASIC:[ 85c (125c) 800hz(BL: 800) WN:0/0 (ffffffff) (E:193) F:0 L:0]
 5: DC2DC/1/:[vlt1:640 vlt2:645(DCl:648 Tl:794 Ul:738) 61W  94A  52c] ASIC:[125c (125c) 840hz(BL: 840) WN:2/1 (ffffffff) (E:190) F:1 L:0]

FW 2.7.1
Turbo settings

Thanks for help

[QuintLeo]

Looks like chip 5 is running very hot, might need to pull the unit apart and re-do the heatsink or thermal compound on it.

[Ski72]

If anyone is interested, I have an SP20 ASIC board available for sale.  Message me if so inclined. 

[ovejda]

I will try re-do cooler, If chips will defected, I will write you PM, Ty

[64dimensions]

Hi,

I have an SP20E unit that when it loses power, it loses the mining pool information and the voltage/power settings go back to the defaults. This unit is run very conservatively, with a total power draw of about 500 watts. Any sort of battery powered memory in these systems?

Any idea of what's going on?

TIA

[Sweminer777]

Hi,

I have an SP20E unit that when it loses power, it loses the mining pool information and the voltage/power settings go back to the defaults. This unit is run very conservatively, with a total power draw of about 500 watts. Any sort of battery powered memory in these systems?

Any idea of what's going on?

TIA

it can be possible that it looses the internet connection check your cables, router, etc etc, only had thhat problem whit internet, it looses power and reset volts.

[sunbreak]

...today after i restarted one of them after tweaking voltage,yellow and green lights didnt light up at all,so after alot of differenet tries to recover it with switching power cords,restarting,sd card rebooting,and so on,i concluded that my controller board on top of the miner has probably gone.So i replaced this board with other from different miner,lights are up and miner starts normally,so my question is can this controller be repaired or i shouldnt bother...

This is going to sound crazy, but I have one miner which behaves exactly like this after every power outage (fan spins and Ethernet link lights, but no yellow/green miner LEDs light and it just sits there doing nothing).  I managed to get mine working again with a hair dryer.  Chances are it will not work for you, but it can't hurt to try:

1) You will probably need to use a SD boot card (not recovery)
2) Before powering up the miner heat it up with a hair dryer on the high setting for 60 seconds (blowing it into the air intake is fine)

I've done this with mine three times now and each time it started right up.  Like I said, it can't hurt to try it.

Whoa ... this morning I had a ethernet switch problem and none of the mining gear could connect. When I fixed the problem almost all of my SP20's were exhibiting the "no lights but ethernet problem" and refused to boot. Repeated power cycles, waiting, power supply swapping, even disassembly and cleaning .. nothing worked.

However I found this post ... tried it out ... I almost couldn't believe it ... it worked for every single machine ... wtf! I've had these machines since January ... I certainly don't recall this being a problem back then. Actually come to think about it ... maybe it was a problem, I have had some odd "doesn't want to start" problems in past that have all "magically" resolved themselves.

Perhaps it has been this heat issue the entire time?

[Biodom]

...today after i restarted one of them after tweaking voltage,yellow and green lights didnt light up at all,so after alot of differenet tries to recover it with switching power cords,restarting,sd card rebooting,and so on,i concluded that my controller board on top of the miner has probably gone.So i replaced this board with other from different miner,lights are up and miner starts normally,so my question is can this controller be repaired or i shouldnt bother...

This is going to sound crazy, but I have one miner which behaves exactly like this after every power outage (fan spins and Ethernet link lights, but no yellow/green miner LEDs light and it just sits there doing nothing).  I managed to get mine working again with a hair dryer.  Chances are it will not work for you, but it can't hurt to try:

1) You will probably need to use a SD boot card (not recovery)
2) Before powering up the miner heat it up with a hair dryer on the high setting for 60 seconds (blowing it into the air intake is fine)

I've done this with mine three times now and each time it started right up.  Like I said, it can't hurt to try it.

Whoa ... this morning I had a ethernet switch problem and none of the mining gear could connect. When I fixed the problem almost all of my SP20's were exhibiting the "no lights but ethernet problem" and refused to boot. Repeated power cycles, waiting, power supply swapping, even disassembly and cleaning .. nothing worked.

However I found this post ... tried it out ... I almost couldn't believe it ... it worked for every single machine ... wtf! I've had these machines since January ... I certainly don't recall this being a problem back then. Actually come to think about it ... maybe it was a problem, I have had some odd "doesn't want to start" problems in past that have all "magically" resolved themselves.

Perhaps it has been this heat issue the entire time?

Hi. It actually makes sense. A hot machine stops in a presumably colder environment with some moisture in the air.
Moisture accumulates on dust (my SP20 trapped quite  bit of dust during operation, unless you use "dust off" religiously and thoroughly), now you have wet dust which probably affects electrical characteristics, hence miner not starting. Using blower simply heats up the "dust" back to the initial state (dry), miner starts. I had similar experience, did not use heater, just blew a fan on it for 10-15 min and it was able to restart.
In any case, glad that things worked out for you...peace.

[HerbPean]

I had to play a bit with one of my SP20 fan... it seems that i can't control the speed of the fan anymore.

What's the default speed ? It looks like 40 or 50.

I set it to 10% or 100% ... nothing change.

Either I damaged the connector or I don't know.

I already try to ssh and edit the file to check if it was set at 30% and it was.

I re-installed the firmware also => 2.6.14

Any idea ?

[mavericklm]

use another fan and if it's doing the same, it's the controller

if not then you did something to the connector and/or cables