Sign in with
Sign up | Sign in
Your question

Power Supply Discrepancies

Last response: in Components
Share
April 19, 2010 5:50:39 PM

So my computer recently started displaying no picture on its monitor. However, when I turn on the computer it sounds like not every device is powering up. So I opened up the computer and tested every connector on the power supply with a multimeter. I read that when I short out pins 15 and 16, the fan is supposed to start to spin, but it does not. However, with these two pins shorted out, I was able to take voltage measurements of the pins on every other plug, and the measurements fell within the tolerance ranges. Once I plug the 20-pin plug back into the the Mobo and power on the computer, the fan starts to spin but the CPU is so quiet that I feel like everything is not powering up. What does this mean? Where do I stand?
a c 248 ) Power supply
April 19, 2010 6:27:55 PM

The cpu has no moving parts. I think you mean something else. :D 

What is the brand and model number of your power supply?

Is the pc system working now?
April 19, 2010 7:09:16 PM

Sorry, I didn't mean the CPU. I meant the parts enclosed in the computer case.

The power supply is the one that came with my desktop computer, and it is an NPS-250KB.

The computer is not currently working. I am still unable to get an image on the monitor.
Related resources
a b ) Power supply
April 21, 2010 1:01:37 AM

a 250w dell power supply is what i think u are using by a little googling of the model number. am i correct? what are your system specifications?
!