Evga 600w first repairing a PSU

[dj_ricoh]

Like the title said.

So I have no clue what to do.

I know the green wire needs to ha e voltage.
This one has 2.5v and the old ones 5v.

I know how to change caps but I don't the quality ones.
How to test a mosfet and that's it. If it's called mosfet. The one screw or glue to the radiator. Noob sry.
so i short the green wire it , the fan spins a 1cm and it stops

[eccerr0r]

Re: Evga 600w first repairing a PSU

it sounds like your 5VSB is working (purple wire is getting 5V). Unfortunately this is where it gets frustrating to debug .. capacitors bad, shorted semiconductors, something is telling the output is out of spec after it tried turning on...

[dj_ricoh]

Re: Evga 600w first repairing a PSU

Thank you.
I will and I will start desoldering stuff.

So there is a short. Psu wants to start but it goes in protection.

[petehall347]

Re: Evga 600w first repairing a PSU

there is some iffy looking solder joints .

[stj]

Re: Evga 600w first repairing a PSU

wait, your getting ahead of yourself.
you need a load on it first.

[dj_ricoh]

Re: Evga 600w first repairing a PSU

wait, your getting ahead of yourself.
you need a load on it first.

That's scary bad.
I'll put a motherboard and a CPU to see
That will be so silly.
I bought it from EBay with £4 lulz

[stj]

Re: Evga 600w first repairing a PSU

most dont, but i'v been stung a few times trying to "fix" ones that did!
now i have this - problem solved.
https://www.aliexpress.com/item/32864168715.html
it's sold out, but there are dozens of other sellers.

[dj_ricoh]

Re: Evga 600w first repairing a PSU

Same thing.
Just a little it moved when I trigger to power.
Thought the green led on mobo it's on?

[stj]

Re: Evga 600w first repairing a PSU

green led will be the standby supply.

so first thing to check is the outputs,
that is the diodes and any ceramic caps for shorts.

if those are o.k. look at the switching transistors AND any snubber ceramic caps across them - been caught there too!