Aywun PSUs. Anyone here heard of them?

[paul_h]

Re: Aywun PSUs. Anyone here heard of them?

I replaced the caps with the following
1x 1000uF 10v -> 1000uF 6.3v NCC KZE (salvaged from dead motherboard)
4x 1000uF 16v -> 1000uF 16v Sanyo WF (salvaged from dead motherboard)
2x 470uF 16v -> 470uF 16v Panny FM (new)
1x 3300uF 6.3v -> 3300uF 6.3v Panny FJ (new)
2x 2200uF 16v -> 2200uF 16v Panny FC (new)

I have also added a fan controller salvaged from a dead PSU.

Do you have heaps of p3s at work?
The design is pretty bad for modern 12V systems is it not?
28A on the 5V rail, the 12V rail split to 15A and 7A.
Does it really have two 12V rails? If so why when the 12V output is so low?

[c_hegge]

Re: Aywun PSUs. Anyone here heard of them?

Do you have heaps of p3s at work?
The design is pretty bad for modern 12V systems is it not?
28A on the 5V rail, the 12V rail split to 15A and 7A.
Does it really have two 12V rails? If so why when the 12V output is so low?

It only has one 12V rail, probably 22A. All the yellow wires are in one group. They usually end up in P4-class systems where the 12V is used for the CPU.

[370forlife]

Re: Aywun PSUs. Anyone here heard of them?

Can you read off the part numbers for the two diode packs for the 12v on the secondary heatsink there?

I'm going to guess 2 16A, 200v fast recovery.

[c_hegge]

Re: Aywun PSUs. Anyone here heard of them?

I can read the one facing the transformers. It reads 16F20C3. The others are covered over by the coils and I don't really want to disassemble it.

[370forlife]

Re: Aywun PSUs. Anyone here heard of them?

They would have to be identical to function properly. I was right though, 2 16A, 200v fast recovery's. 32A combined, pretty good. I have a wintech 400W (a real 400W) that had the same thing on the 12v.

[c_hegge]

Re: Aywun PSUs. Anyone here heard of them?

I load tested one today. It was fine on 316W. I increased the load to about 400W and it died a few minutes later. No explosions or fireworks, it just stopped working. I let it cool down and tried it again on a light load, but it was still dead.

[370forlife]

Re: Aywun PSUs. Anyone here heard of them?

Take out the diode packs and check for shorts.

[c_hegge]

Re: Aywun PSUs. Anyone here heard of them?

Done. none found. same on the switchers.