I have an ASUS m2n-E mother board with an Enermax NoisetakerII which will not power up. The green light is lit on the mother board which suggests it is getting power and there were no sparks or such when I tried to power it up or when I powered it down. So my thinking is that the motherboard has quit working. is there any way to make sure which is bad?
The only out of ordinary thing is the power got turned off on it(without a proper shutdown...I hate surge protector power switches). I left for the day came back pushed the power switch to turn it on and nothing happened. I opened it up afterwards to see if I could figure out what was going on. Noticed the green power led was on on the mother board then checked to make sure all the cables were good without success.
It is my understanding the power switch engages a relay on the mother board. So what I am trying to figure out is it the relay on the mother board or is it the actual power supply that has issues? Is there a way to check the power supply whithout the computer being booted up? I do have a pretty good multi meter and am not a complete idiot with it.
This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU. You can carefully probe the pins from the back of the main power connector."
If the PSU passes this test then try to borrow a working motherboard and test that with the PSU.
Thank you for your help with the info you posted I was able to determine the power supply is working fine. The issue is with the mother board. When I shorted the green and black wires the power supply worked. It also caused the motherboard to start up but, it seems that relay that switches the power supply on is faulty. I was able to do a backup and copy some data off. So all is well in my world now...Well almost all...