New S9i whats going on here (blinking light on PSU)

[thecryptoprick]

https://youtu.be/XllSw4WAcq4

1500W PSU on 110v. The guy at parallel miner said this can put out 1500w on 110.

[1714066605]

1714066605

[1714066605]

1714066605

[1714066605]

1714066605

[ccgllc]

https://youtu.be/XllSw4WAcq4

1500W PSU on 110v. The guy at parallel miner said this can put out 1500w on 110.

Looks like a power overload to me.  You sure you have them hooked up right to the S9i?  e.g. only one power supply per hash board?

[philipma1957]

Looks like a power overload to me.  You sure you have them hooked up right to the S9i?  e.g. only one power supply per hash board?

That has a grounding setup that allows both psus to be as one.

Ie you should be able to use any cable on any board.

My guess is a defect in the pcie cables.

Every once in a while parallel miner sends out a bad cable with crossed wires.

At op look at every pcie cable to see if they done correctly. I have a thread with clear photos of this issue

I will go to a real pc and find the thread for you.

Found the thread check it I bumped it just for you.

[thecryptoprick]

I checked the cable and it's good. The peeps over at parallel miner said this PSU should be OK. I was going to get the 2400w version, but didn't. I think I can get 1800w on 110 with it. Could this just be a power issue? I did remember one of the boards in the miner getting pretty hot, around 90.

2400W version (I am on 110) https://www.parallelminer.com/product/bitmain-antminer-s9j-power-supply-2400w-110-240v-94-platinum/

[thecryptoprick]

I tried running the S9i on two hash boards only and it's starts up. However after about 3 minutes the red fault light comes on, the fans ramp down, and then after a minute it starts this cycle again.

I am going to get a PSU for 220, but do you think it is a power issue or maybe the miner?

[banman24]

get a multimeter and test the voltage coming out of your wall socket, look for drops or spikes

[thecryptoprick]

The S9i runs fine on one hash board, I tested both PSU's. When I power two, this time instead of getting the red fault light and fans slow down. I get one of the PSU breakout boards blinking, i.e., the digital voltage readout blinks, also the PSU green LED blinks.

[thecryptoprick]

One of the PSU's was bad. Actually in was one of the break out board's that was bad..

[banman24]

The S9i runs fine on one hash board, I tested both PSU's. When I power two, this time instead of getting the red fault light and fans slow down. I get one of the PSU breakout boards blinking, i.e., the digital voltage readout blinks, also the PSU green LED blinks.

Are those breakout boards linked together? Not sure about parallels break out boards but other setups that are similar to this such as a 750w + 1200w psu can be used to power an S9. No need to link the breakout boards. I use the 750w for the control board and one hashboard and the 1200w for the other 2 hashboards. This sounds weird but the correct way to fire it up is to turn the 750w on first and then quickly following turn the 1200w on next.

Either way If both these psu's are 750w and you are running on 110v I would say thats not enough, your stressing the psus to much. They might be able to do it on 200+volt but even then I would recommended (2) 800watts or like I said a 750 and 1200.

Hopefully you get it sorted out and no damage to the machine occurs.

[thecryptoprick]

Are those breakout boards linked together? Not sure about parallels break out boards but other setups that are similar to this such as a 750w + 1200w psu can be used to power an S9. No need to link the breakout boards. I use the 750w for the control board and one hashboard and the 1200w for the other 2 hashboards. This sounds weird but the correct way to fire it up is to turn the 750w on first and then quickly following turn the 1200w on next.

Either way If both these psu's are 750w and you are running on 110v I would say thats not enough, your stressing the psus to much. They might be able to do it on 200+volt but even then I would recommended (2) 800watts or like I said a 750 and 1200.

Hopefully you get it sorted out and no damage to the machine occurs.  

The BOB's were linked together (only 2 boards powered) and it went into a red fault. Then I tried only powering 2 hash boards with the bob's not linked and I got a dimmed digital readout on the 1 bob and then the one psu failed. Just curious, if you have 2 psu's powering 3 boards, and the PSU failed that is connected to the control board, what will happen to the S9, any damage?

[philipma1957]

The BOB's were linked together (only 2 boards powered) and it went into a red fault. Then I tried only powering 2 hash boards with the bob's not linked and I got a dimmed digital readout on the 1 bob and then the one psu failed. Just curious, if you have 2 psu's powering 3 boards, and the PSU failed that is connected to the control board, what will happen to the S9, any damage?

assuming the psu fail is a cap or a mosfett and not a short you should be fine.

[thecryptoprick]

Thanks, but now I confirmed it was the break-out-board that was bad. I just ordered the following PSU which should be better...


https://www.parallelminer.com/product/bitmain-antminer-s9i-power-supply-2400w-110-240v-94-platinum/

[mrmoee]

I know this is an old thread but just wanted to add that I've also come across blinking PSUs before and in my case it was due to improper data wiring. I accidentally connected two miners directly. Once I separated them the PSUs worked properly. Just wanted to let people know so that they can look into this as it's a pretty easy troubleshooting process and fix (if this is your actual problem).