Power Suppy

Post by **corpse** » Mon Oct 17, 2005 5:31 am

I got a buddy with a computer that the power suppy fan has stopped working and the computer won't come on. The power light comes on, but the screen stays black.

I suspect the power supply is dead, but what I want to know is this: His computer has the main power supply switch to the motherboard PLUS a smaller one also to the motherboard.

Is it safe to use a power supply that has only the one main connection to the motherboard just to test and see if the computer will boot?

Post by **Grudge** » Mon Oct 17, 2005 8:46 am

Is the motherboard AGP or PCI-E? Does the PSU have a 20-pin or 24-pin connector?

Post by **corpse** » Mon Oct 17, 2005 4:04 pm

It is AGP and I'm not sure about the number of pins. It is ATX and has the usual big rectangle shaped white plugin the goes into the motherboard. Then it also has a small white plugin that goes to the motherboard/

Post by **Grudge** » Mon Oct 17, 2005 4:24 pm

Then it should be safe. As long as the number of pins match up between the PSU and the motherboard, it's just to plug it in and give it a try. I take it that the smaller 4-pin connector isn't located right next to the big 20-pin one? The 4-pin one is just there for "extra stability", it should be able to boot without it.

Just don't try to connect a 20-pin connector AND the extra 4-pin connector from an older non-ATX2 PSU into the 24-pin connector of a ATX2 motherboard.

Post by **R00k** » Mon Oct 17, 2005 6:06 pm

If it turns out not to be the PSU, you might try checking the video card, the memory, and lastly the motherboard.

Post by **corpse** » Mon Oct 17, 2005 6:22 pm

Actually tested it just now with a power suply tester and the power supply is not lighting up any of the LEDs so I guess it is screwed

Post by **R00k** » Mon Oct 17, 2005 8:58 pm

Better that than the others. :icon14: