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Think Mobo is detecting voltages wrong

H

Herulach

Gawd
Joined
Dec 24, 2004
Messages
997
Anyone know which pin on the ATX connector is +3.3V? Motherboard monitor is reading my 3.3V line at 2.7V, im pretty certain its not the power supply (Tagan 480W) but i thought id better check.
 
Right, tried that, voltmeter reads 3.41V, which is good, panicked a little when i saw the reading. Anyone have any ideas about how to sort the reading? I mean, its something i can live with, but if its a faulty mobo it might help explain my inability to increase the Vcore any.
 
The spec calls for a max of 5% variation, so your right on the high side. Double check that board, I believe you have a square 4 pin Molex as well as your 20 pin main connector. If that’s the case your Vcore comes from your 12 volt supply.
 
Nope, just the one ATX connector, its a very old board indeed, i belive i was the 3+ version that cam with the extra connector. I figured it would be ok to be a bit high, since that was with no load whatever.
 
Check that the connectors in the ATX plug from the PSU aren't being pushed back out when you plug it into the board. In other words make sure they are making a good connection. If the connection is iffy, you'll get low readings like you describe.
 
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