I think my power supply broke. ?

Question

I took all the cords out, put the things i only need in it (one stick of ram, no dvd gpu, other stuff), nothing turns on. No fans spin, no sign of life. How sure can i be that my psu stopped working before i go and buy a new one?

Answer 1

Have you tested it with another computer? Have you tried putting it on and seeing if it gets warm. If everything is connected to your computer and it won't turn off then you will need to buy a new psu. I had to do that with an old computer because the PSU stopped working after 9 years .

Answer 2

Try this:

Put everything back the way it was when it last worked, don't put the panel back on. See if it runs. If it does then it's NOT the power supply.Then start removing each p;iece one at a time until it stops working, then put that piece back in and remove others..... What you are doing is chasing down the problem in a logical manner.

PS.. Frequently computers need TWO identical ram sticks to work, try putting the second one back in first and see if that works... It's a long shot, but worth it.

Answer 3

If you have a multi-meter you can use it to detect if any power comes out of the connectors that go to the motherboard.  Depending on your connectors (if they have exposed metal contacts), you can just run to the local hardware store and pick up a plain old fashion meter, that measures electricity. Put the probes onto the side that connects to the other board.

Outside of that does your Motherboard have any LED's  to show power when it's normally plugged in?

Do you have another spare machine around, try swapping PSU's (if possible)

Finally, while the PSU is typically the culprit, especially if you've had the machine for some time, other hardware components fail to or are causes such as errant, dip switch jumpers,  solder points touch cases .

How did it first fail? was their any odor like something just burnt out,? were there any symptoms right before it failed, these can help narrow down the list of possible causes.

Answer 4

Make sure everything is connected properly.

Answer 5

Before buying a new PSU, buy or try or double check a new or a spare power cord of the CPU (from UPS to the PC), there might be a problem in it. (most probable reason)

Also check your UPS and the Circuit board where you connect your UPS.