Fortron FSP-ATX-400PNF

[maxd]

Re: Fortron FSP-ATX-400PNF

Hello everyone.

I have 2 of these ATX-400PNF power supplies. One is in my computer system and another I got from my friend some time ago when it started to behave strangely. Situation with 2nd one is like trez0r explained in post #56.

Anyway, when I did major PC cleaning recently I also opened PSU to clean all the dust. I noticed that 3300uF Jamicon cap (#3, picture No. 12) is bulbed so I'm thinking about replacing it. PC is working fine, no strange behavior or noises from PSU.

My question is like this: If I replace bad cap with some low or ultralow ESR cap from good brand, do I have to replace all other caps that are nearby? In other words - does ESR for all caps in that area has to be +/- equal in order for PSU to operate correctly?

Thanks.

[momaka]

Re: Fortron FSP-ATX-400PNF

My question is like this: If I replace bad cap with some low or ultralow ESR cap from good brand, do I have to replace all other caps that are nearby? In other words - does ESR for all caps in that area has to be +/- equal in order for PSU to operate correctly?

Not necessarily. But replacing all of the Jamicon and other inferior/bad caps is always a good idea. Don't use ultra-low ESR (motherboard-grade) capacitors, though - if you can avoid it. Most power supplies don't work well with them.

All of these are good choices:
Chemicon: KY, KZE, LXY, LXZ
Nichicon: PS, PM, PW, HE, HD
Panasonic: FC, FM, FK, FR
Rubycon: YXG, ZL
Samxon: RS

[maxd]

Re: Fortron FSP-ATX-400PNF

Thank You very much, momaka.