LAST EDITED ON Apr-28-02 AT 02:49 PM (EST)
Testing a PSU with a DigitalMultiMeter or an AalougeMultiMeter is only possible when there is a (old) working Mainboard connected to the PSU.
If it will start up, the PSU should be OK.
But if you insist on testing the PSU, here is some data:
Black is ALLWAYS the "Common"
ALL measurements are taken with the BLACK meterlead to a black PSU cable, and the red to the color who is beeig tested.
ALL cables of the same color are connected in Parrallel.
For instance: a red lead is ALLWAYS +5 Volt.
If you have a DMM, there is no problem testing.
If only an AMM, SET the Voltage switch on AC!
A Negative voltage is invisible on the scale of an AMM, and can damage it in the Process.
The highest voltage is + or - 12 Volt.
Set the meter at least to 20 Volts so you cannot damage it.
(Even on the + and - 12, the meter is not directly damaged.)
I assume ATX systems by default.
If an AT, the colors are the same Voltage, but the connectors are different.
See this URL for more details:
For the colors, go to this: