Trouble shooting power issues

[oslama]

Recently my server crashed. It would not power-up so i transplanted the components to another case and Psu.

How do i trouble shoot the old psu last i remember the fans were rattling and revving and case, which has had 'grounding' issues.

The case is a Evercase ATX steel (heavy) with a built in raised drill holes mother board tray which are wearing out. I had 3 out 6 screws just fall out when i took the mother board out. The PSu is a coolermaster cx 400.

evercase

I just bought a PSU tester from geeks.com. The PSU tested good but the fans dont work.


I want to keep the PSU but am having issues with the case.

SYSTEM:

Abit NF7 v2
AMD Barton 2500 mobile
4 HDs, 2 dvdrw
ati 9500 pro

 

[Zepper]

Those simple 10 - 20$ testers will tell you if it is generally good and probably won't blow up your PC but they are hardly diagnostic. You really need an O-scope and a dummy-load bench for that. It's probably time to replace the fans - those are about the cheapest things in most inexpensive PSUs so you can easily do much better in the aftermarket. It's very easy to do. Try to find fans that have relatively the same Amp or Power (Watt) ratings as the originals so that any thermal speed control in the PSU will work reasonably like it did originally. IAC, I found that a lot of those internal thermal controls are weighed far too heavily in favor of quiet rather than self-preservation. So now I usually control my PSUs fans manually until the output air is cool enough for my taste.

Just getting decent cooling may bring that old CM clunker back from the brink

.bh.

 

[GalvanizedYankee]

I really shouldn't post this but I'm laughing too hard not to do it.
From recent news broadcasts we realize things are rough in the State of Kwajalein (profile).
Stand-offs do not wear out and should not fall off. How molded is the tray?? A little bleach
and hot water will get that mold under control.

Your coolermaster cx400 is not a very highly rated PSU and it just might have reached the
end of it's service life. Over at badcaps.net they do repair old PSUs, but it's done more as
a hobby or for personal use. Just buy a new PSU, like a $50 Fortron.

The old one can be donated to this guy because he is allways looking for new ornaments.

http://www.roadgems.com/images/04photos/Schnieder_ratbike01.jpg


Zepper is taking you seriously...I'm not. Except the part about up-grading your PSU.


...Galvanized

 

[oslama]

Originally posted by: GalvanizedYankee
I really shouldn't post this but I'm laughing too hard not to do it.
From recent news broadcasts we realize things are rough in the State of Kwajalein (profile).
Stand-offs do not wear out and should not fall off. How molded is the tray?? A little bleach
and hot water will get that mold under control.

Your coolermaster cx400 is not a very highly rated PSU and it just might have reached the
end of it's service life. Over at badcaps.net they do repair old PSUs, but it's done more as
a hobby or for personal use. Just buy a new PSU, like a $50 Fortron.

The old one can be donated to this guy because he is allways looking for new ornaments.

http://www.roadgems.com/images/04photos/Schnieder_ratbike01.jpg


Zepper is taking you seriously...I'm not. Except the part about up-grading your PSU.


...Galvanized

The tray is not molded but it has raised metal moundts with threads built in. It does not use the copper stand offs

 

[Zepper]

Originally posted by: oslama

Originally posted by: GalvanizedYankee
I really shouldn't post this but I'm laughing too hard not to do it.
From recent news broadcasts we realize things are rough in the State of Kwajalein (profile).
Stand-offs do not wear out and should not fall off. How molded is the tray?? A little bleach
and hot water will get that mold under control.

Your coolermaster cx400 is not a very highly rated PSU and it just might have reached the
end of it's service life. Over at badcaps.net they do repair old PSUs, but it's done more as
a hobby or for personal use. Just buy a new PSU, like a $50 Fortron.

The old one can be donated to this guy because he is allways looking for new ornaments.

http://www.roadgems.com/images/04photos/Schnieder_ratbike01.jpg


Zepper is taking you seriously...I'm not. Except the part about up-grading your PSU.


...Galvanized

The tray is not molded but it has raised metal moundts with threads built in. It does not use the copper stand offs

----------------------
Entirely possible that you used the wrong size screws. Those raised mobo mounts usually take the no. 6 screws (coarser threaded). Using the fine threaded screws (ISO) can chew up the threads and make it difficult to put the no. 6 in. You may need to run one into each hole a few times to clean up the threads (GY would recommend the use of a proper tap, but I'm too much backyard mechanic for that 😉 ).

Hey G-Y, I give 'em the benefit of the doubt... 🙂

.bh.

 

[GalvanizedYankee]

OP, if the threads are stripped...Consider. Use longer screws with nuts on the back side.
You should be able to access the backside of the tray with the right side cover off.
Use the thin, reddish paper washers under the screw heads and don't be tempted to
over-tighten the screws. We are looking for just snug. If you wish to lock the nuts to the
screws so they won't work loose, just paint them with a bit of clear nail polish=works.
The screws can still be easily removed at a later date.


...Galvanized

 

[oslama]

update:

The PSU tested good but the fans dont work

 

[GalvanizedYankee]

If the PSU fan is not working...Replace it with a fan of the same spec, use a ball bering fan.. Google replacing/changing PSU fan. There are several tutorials on line.
Test your case fans by hooking them up to a known hot 12V line, make sure you have a good ground to complete the circuit.

It might be time for a review of comp assembly. Read the beginners guide here. It has lots of pics. http://www.mechbgon.com/


...Galvanized