Re: Antec Neopower 480 issue

Ive also noticed that if i plug an old COMPAQ/HP keyboard into the PS2 on the back of the mobo, and flick the switch on the PSU, all of the keyboards LEDs light up (Num Lock, Scroll Lock, and Caps Lock and the SLEEP/standby button).

I then tried it with a standard (no sleep button) keyboard and the LEDs for caps, num and scroll just flash and then go out.

Alex

Re: Antec Neopower 480 issue

I have also tested it with the 24pin connector attached to the mobo, and only a CPU on the mobo. When i flicked the ON switch at the back of the PSU the green mobo LED lit up, but the PC would not start (no fans or beeps).

Whilst the 24 pin connector was attached to the mobo, i measured only 0.04V at the 5V line. Does that indicate that under any kind of load the PSU is failing (it reads 5.01V when the 24 pin connector isnt attached to the mobo)?

Alex

Re: Antec Neopower 480 issue

Thanks for the tips so far.

Ive used the multimeter on the PSU. My findings are as follows:

With a jumper cable between the green and black to turn on the PSU away from the motherboard, i flicked the PSUs ON switch and i registered correct voltages at every pin of the 24pin ATX 2 connector. I registered correct voltages at every pin out of the PSU. The PSU fan started to spin as soon as i flicked the ON switch.

I then connected the 24pin ATX 2 connector to the motherboard, jumped the Green and Black wires,...

Hi, let me start by saying hello (my first post).

Whilst using my PC recently I suffered from a power outage, which, when it was reinstated, seemed to leave my computer terminally ill. After a day of being unable to restart my PC I tried the on switch again and found to my suprise that it powered itself back up. Then i powered it down correctly, and it has yet to power back up

I have an Antec Neopower 480 PSU that has served me well for the past year and a half powering an Asus A8N SLI deluxe mobo.

When i switch the PSU power switch to ON, a green...