Re: Zalman ZM600-HP repair for spare PSU

Thanks a lot for suggestions, unfortunately I had minor setbacks with repair since I have more enthusiasm than skill, but live and learn =)

I set old computer with psu, it powered on for a maybe 20 secs then shut down. Then i couldn't get mobo power on with other psu's either, no fans running. Got zapped a bit when removed fan casing (psu off), might have touched heatsinks on edge with casing so that might be cap discharge.

Zalman didnt start any longer with PSU tester so i tested fuse and it wasnt broken, while...

Re: Zalman ZM600-HP repair for spare PSU

Update
When I put single hard drive as load, psu tester alerted that 3.3 line raised to 3.6V, other lines didin't change. I replaced all secondary side electrolytic caps, none of them seemed to be bad thou and to do so I had to remove heatsink so I tested schottky rectifiers (figure 17 in link) as well but I couln't them bad either.

[url]http://www.hardwaresecrets.com/article/Zalman-ZM600-HP-600-W-Power-Supply-Review/402/6[/url]

Next I'm going to replace Samwha input cap with 390uF 450V Rubycon as this testek...

Re: Zalman ZM600-HP repair for spare PSU

Update:
I've come to conclusion that 3.5V is so close specs it doesn't need remedies unless someone convinces me otherwise. Thanks C_Hegge for showing green light for cap size in first post.

[url]http://en.wikipedia.org/wiki/ATX[/url]Re: Zalman ZM600-HP repair for spare...<br /> <br />

Re: Zalman ZM600-HP repair for spare PSU

Update:
Allrite, got capacitor and PSU tester I ordered some time ago.

New capacitor is Samwha and its shorter but with bigger diameter so it didn't fit without soldering additions to legs. It measured 0.1 ohm with ESR-tester. Since cap came slightly over pcb I had doubts if it will fit in casing. It did, but the question should have been "Will top fit after soldering cap?", Nope, not without placing fan ouside. It was delightful to realize that :P

After tightening screws and shakedown testing...

Hi!
I got my second Zalman ZM600-HP PSU broken some time after warranty period. If I recall it correctly it was one morning blinking blue led and fan was turning on and off, computer didn't respond to power on/off button even for a second. I replaced it with other power supply and computer worked like it should.

Now I need a bit beefier spare power so instead of burning money for new PSU that propably works only a couple of years before giving up I decided to give it a try to fix this myself. Fuse seems to be ok, no obvious bloated or leaked caps an eye can spot, ESR-meter...

Re: New Members - please post your introductions here

Howdy folks! I'm long time lurker, first time poster(tm). Seems my journey into electronics is powered by Zalman, Antec, Enlight, HEC, FSP, Handan and Topfield, grrrr!