how can i replace P5 M3x PSU with server PSU?

[mavazov]

Hi. I had a broken M3x PSU (the P5 one), that couldn't find any replacement. so my question is can I replace the server PSU (HP, Dell,... doesn't matter, I have delta) with that?

i researched and the problem is it wants 2200W power but server PSU mostly are 1200W. they can be paralleled with some fault detection or any other solutions for safty. I found that parallelminer.com is selling this item for M3: https://www.parallelminer.com/product/whatsminer-m3-power-supply-2400w-110-240v-94-platinum. this item can be done DIY too without fancy PCB.(that's my goal).

but another problem is that the M3x PSU has 3 wires that called "hardwired". I researched again and find that 3 wires are GND, SCK, SDA.
https://i.imgur.com/fjqbv23.jpg

so I think that is communication between PSU and control board that sends the serial number of PSU to the control board and is voltage adjustment communication too. (to lower the voltage at high hashrate).

the thing is servers PSU has Potentiometer to adj voltage. so is it possible to imitate that communication with Arduino that controls voltage adj pot on server PSU or any other data that control boards need?

P.S: buying replacement is not an option to me, because of my country.

[philipma1957]

then does china ship to your country

[mavazov]

then does china ship to your country

Hi, as i said i can't buy replacement, i am in Iran.

[philipma1957]

if I buy this https://pangolinminer.com/product/p5-power-supply-unit-for-m3x-shipout-in-7-days/ and ship to usa. it is 105 + 106 to ship = 211

https://postcalc.usps.com/Calculator/MailServices?country=10206&ccode=IR&omil=False&dmil=False&mdt=6%2F22%2F2020&mdz=11%3A59&m=12

USA allows shipping to Iran I would need to pay 87 to ship to you so 211+87 = 298

Simply too much cost to be worth it.

And Most likely my government will put me a  potential terrorist list because I shipped it to you.

You need to find someone in Asia that has an old one this is will to sell it to you.

Your diy idea could be good. but these OEM psu's talk to the controller. I don't know how to get past that issue.

I have a m20s I got a replacement p21 psu I had a p20 psu.

In order for the psu and miner to work I had to reprogram the controller.

In my case microbt/whatsminer gave me a firmware patch.

In your case I do not know how to program the controller to work with the diy psu.

[mavazov]

Thanks man