Show Posts
I have an antminer S4. It powers u p but does not connect or hash.
Here is what happens when I turn on the power.
1) Fans power up at high speed. The screen has power, but no text. Green LED next to screen is lit.
2) Fans power to a lower speed. Screen is still lit, but no text. Green LED turns off.
3) the word "Antminer-" appears on the screen
4) The 4 line screen display comes on line. Green LED is not lit.
5) the display says:
Antminer S4
127.0.0.1
0 GH/s
Max 0 C
The green light next to the display does not come on either.
6) this is as far as the boot process goes. It never acquires an IP address, or start to hash.
Steps I have taken to troubleshoot:
1) check the ethernet cable, power cable, connection. I swapped in a functioning S4, and it powers up and connects to the internet and hashes.
2) Swapped the microSD chip from a functioning S4 with the chip from the non-hashing S4. Same results, Powers up but does not hash (no change in other words)
3) checked all cable connections. all appear good.
4) checked the voltage at the power leads to the board with a multimeter. Reads 25 V
5) Used a port scanner on my network before and after powering the Antminer. There are no new connections.
Can you please suggest additional troubleshooting steps?
Here is what happens when I turn on the power.
1) Fans power up at high speed. The screen has power, but no text. Green LED next to screen is lit.
2) Fans power to a lower speed. Screen is still lit, but no text. Green LED turns off.
3) the word "Antminer-" appears on the screen
4) The 4 line screen display comes on line. Green LED is not lit.
5) the display says:
Antminer S4
127.0.0.1
0 GH/s
Max 0 C
The green light next to the display does not come on either.
6) this is as far as the boot process goes. It never acquires an IP address, or start to hash.
Steps I have taken to troubleshoot:
1) check the ethernet cable, power cable, connection. I swapped in a functioning S4, and it powers up and connects to the internet and hashes.
2) Swapped the microSD chip from a functioning S4 with the chip from the non-hashing S4. Same results, Powers up but does not hash (no change in other words)
3) checked all cable connections. all appear good.
4) checked the voltage at the power leads to the board with a multimeter. Reads 25 V
5) Used a port scanner on my network before and after powering the Antminer. There are no new connections.
Can you please suggest additional troubleshooting steps?
With working S4's did you try to switch PSU and see if that does the difference? PSU's sadly have not been the greatest in some units.
He said he measured 24v though.
IT is DC correct? Is it the PCI connectors or lugs?
Did you check each plug?
I would have thought SD card until you said you tried one from a functioning unit. It obviously isn't getting an IP if all voltages are present.
So then it would have to be the beaglebone itself, maybe the SDcard port?
Or, something as simple as the CAT5 cable or the port on your switch?
By changing out PSU with working one he does not have to check each plug or connector. Its quick and pretty easy. The BB chances are is working or chances lcd would be blank and he also checked cables.
He mentioned he checked ethernet cable so this would be the CAT5. Although swapping it to test again is not a horrible idea.
I would make sure SD card again to make sure to eliminate software issues. If swap again make sure it's completely seated. But checking PSU again I think would be worthwhile. What leds are on the PSU when you turn it on and with it not hashing?
Sorry for the confusion folks. Typo.
The voltage at all 4 boards (the lugs) is 12.0 V
The voltage at the pci-e connector is 11.98 V
Ethernet cables have been swapped also. No change. Swapped ports, and even swapped out the switch. Also other machines work on the same port, and the same switch and same ethernet cable works just fine.
I was thinking about swapping out the beagleboard (with one from a working machine) and see if that is the issue. Never done that, but should not be that difficult. Can it? Although it looks like I have to pop out the power supply to get to the beaglebone.
