Corsair CX600 (600W) outsourced to CWT
not the V2 or 600M
http://www.overclock.net/forum/31-power-supplies/1431436-why-you-should-not-buy-corsair-cx430-500-600-a.html I bought this used, for a little dual core PC (I have an EVGA SuperNOVA 850W G2 for my gaming rig). I was ripped off since it doesn't work....however now I get to have a go at fixing it
![DMM :-DMM](https://www.eevblog.com/forum/Smileys/default/smiliey_dmm.gif)
. I've never really worked on a SMPS before tho.
Google gives me near useless search results for stuff like this without published schematics. I'm pretty sure this is the original CX600, not the V2 or 600M, both of which were rated better. These things were only rated for 600W at 30 degrees C, so they failed fairly easily and some cheaper parts were used to meet the budget.
I don't want to just replace the caps at random, I want to find the problem.
Last fall I briefly checked around on it. It powers up, spins the fan for 1-2 seconds, and auto-shuts down. I didn't find anything obvious, maybe a few weak looking solder joints but I never retouched any. For the most part I think the diodes, BJTs and MOSFETs seemed ok unplugged, without knowing anything about the circuit really.
Then with it plugged in, and bad angle and lighting, started checking the PFC stage and shorted source to drain of a K18A60V with the probe. And the fuse went right away, hopefully nothing else minded. So I have that here now. So I can replace that and hope it's back to where it was.
Can anyone point me to some modern, ATX PSUs with a PFC stage, and protection circuits that are fairly similar to big brand PC PSUs ?
Or any tips ? I'm not checking this with my scope yet when mains powered, until I know 100% where mains referenced stuff ends, and any high voltages are.
The main PWM driver chip is a ST9S429-PG14 . Its also in the CX430 (430W) and I just found this with most of the main parts listed, thats great, from a detailed review.
http://www.realhardtechx.com/index_archivos/Page17755.htmhttp://www.realhardtechx.com/index_archivos/Page10506.htmI'll drawing out the circuits again, check a few things again, and replace the MOSFET I zapped. Then start over with a SMPS troubleshooting guide I guess.