Help identify mosfet 2000w noname power supply

[Ken123]

Hi.
Im troubleshooting a 2000w power supply for a mining rig.

Im looking for replacement mosfets for the 070N080C2 shown in picture attached.

And also why did they blow? What else should i check?
Do i need to replace some controller chip also?

/Ken

[CapLeaker]

Re: Help identify mosfet 2000w noname power supply

Google 70N80.
If all 3 pins are shorted look at the gate drive, if there is a low ohm resistor, check it for spec.

[Ken123]

Re: Help identify mosfet 2000w noname power supply

Ok thnx. I seem to have problems finding some to buy but there is a datasheet and should be able to find a subtitute.

[Ken123]

Re: Help identify mosfet 2000w noname power supply

Datasheet

[Ken123]

Re: Help identify mosfet 2000w noname power supply

Datasheet says N-MOSFET 80V, 6.0mΩ, 118A

Have found 75v 3.3mohm 120A

Do those work? Do i have to replace all of them?

[CapLeaker]

Re: Help identify mosfet 2000w noname power supply

You should be replacing all of them, unless you are in a pinch. You could cheat and put some different Mosfets in there, but it will change the rating of the inverter. Lower voltage rated isn’t a good idea. Look at HM70N80 at AliExpress…
Also google “finding mosfet substitute” and read up.