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power good connetor and PSU problem

Forum Motherboards & Memory : General Motherboard - power good connetor and PSU problem

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oleblytt   08-19-2004 at 06:12:14 PM

I believe I have some trouble with a parasitic connection to ground on my motherboard. May this be controlled by measuring the voltage on the power good wire between the PSU and motherboeard? I have a Abit NF7-S motherboard and measured the voltage on the powergood wire to be 4,7V.

The problem was discovered when I installed a new PSU (NorthQ NQ4001) and it shut down the power imediatly after I pushed the on button. I now use my old PSU which still works.

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Cybercraig   08-21-2004 at 12:32:29 AM
- 0 +

The rule of thumb is + or - 5% on rail voltages. Your NorthQ is out of spec. I doubt it's a MB ground. Try that supply in another rig and see what you get.

Abit IS7 - 2.8C @ 3.4ghz - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
Samsung 120gb ATA-100 - Maxtor 40gb ATA - 100
Sony DRU-510A - Yellowtail Merlot

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oleblytt   09-24-2004 at 01:41:36 PM
- 0 +

Thanks. Returned the NorthQ and bought another more expensive PSU from BeQuiet! This works just fine.

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