11.00V output from 12V rail, Compaq (OEM by Liteon) 250W PSU

[Phil_123]

Is there any way to increase the voltage output back to a normal level, around +12V?

[Rainbow]

Re: 11.00V output from 12V rail, Compaq (OEM by Liteon) 250W PSU

Did you test that under load?

[Phil_123]

Re: 11.00V output from 12V rail, Compaq (OEM by Liteon) 250W PSU

Did you test that under load?

No.

[tiresias]

Re: 11.00V output from 12V rail, Compaq (OEM by Liteon) 250W PSU

No.

You'll have to do that to obtain a realistic reading of the PSU's 12Vdc output. Many PSUs, even among the "better" brands will give a low, (often out-of-spec low), 12V output will all lines unloaded. You'll see a number of manufacturers state minimum loads for each rail, in addition to the usual maximum.

I usually use large wirewound resistors to load a PSU, although any other constant resistive load, such as 12V car light bulbs, will also work well.

[Phil_123]

Re: 11.00V output from 12V rail, Compaq (OEM by Liteon) 250W PSU

You'll have to do that to obtain a realistic reading of the PSU's 12Vdc output. Many PSUs, even among the "better" brands will give a low, (often out-of-spec low), 12V output will all lines unloaded. You'll see a number of manufacturers state minimum loads for each rail, in addition to the usual maximum.

I usually use large wirewound resistors to load a PSU, although any other constant resistive load, such as 12V car light bulbs, will also work well.

I use this PSU to power this configuration:
Intel P3 933Mhz
Asus CUSL2-C Black Pearl
NCP PC133 256MB SDRAM
WD800JB x 2
Radeon 9600XT
5 port NEC USB2.0 card
Aureal Audio sound card
Liteon 52x32x52x16x combo drive
Floppy drive

On the PSU sticker, it says
+5V 25A \______ Combined max power 145W
+3.3V 14A /
+12V 8A
+5V AUX 1A
-12V 0.8A
-5V 0.5A

Both UNI-T DT830B multimeter and Motherboard Monitor 5 gave me a jumping +12V reading of around +11.00V to +11.53V.

I experienced random program errors and reboots until I replaced the psu with Seventeam ST-420BKP.