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Got multimeter, where to test all 3 voltages?

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OP
E

equalizr

Member
Joined
Jul 28, 2002
Location
Alberta, Canada
nevermind..i figured it out...i tested the 3.3 off of the AUX cable.
voltages from multimeter are as reads:

3.3v=3.49v
5v=5.11
12v=12.48
 

Diggrr

Underwater Senior Member
Joined
Nov 29, 2001
Hehe, rescued from dead bottom.

When you test with a multimeter, you're getting the actual voltages that the power supply is puting out, but not necessarily what the motherboard is getting. Remember that the psu's juice is passing through tons of components and connectors on it's way through a motherboard, all of which will drop voltages slightly just by resistence (no superconductors on a motherboard yet).
Software programs tend to see more closer to what the motherboard is getting at the component level, though honestly, some aren't reading right or don't have software updates for current chipsets, cause I get some super funky readings on my AT7 (like around -7 volts for my +3.3).

Now if you have a large difference between them, and the software seems not be the problem, then look first at your power connector to make sure it's clean and not charred or melted.

Anymore problems, post 'em here.
 

Warren G

Member
Joined
Jun 14, 2002
Location
California
Does the whole comp has to be on to test the psu or can i just hit the switch in the back of the psu and test it from there?
 
OP
E

equalizr

Member
Joined
Jul 28, 2002
Location
Alberta, Canada
computer has to be on...or unplug it from the mobo and connect the green and any black together to turn it on to test voltages.