<< Hi, Would you know what would be normal allowable limits for the +12V & -12V Power Supply ??
My PCAlert has a limit at +13.2V & -13.2V and sometimes the -13.3 is reached and I don´t know if it is allowable.
Thanks Gustavo.-
>>
Onboard diagnostic is not accurate and is certainly not calibrated. Use a DC voltmeter of .5% accuracy or better and measure it directly from motherboard ATX connector. Push the probe into back of the connector. Black is ground, and keep on probing (other than black) until you get -12V. You only have to probe same colored wire once as they carry the same voltage.