400CX 14+V on 12V line... RMA time?

[HangFire]

I think I know the answer to this question already, but... in checking out my new build, I just saw my 12V rail go from 12.9V to 14.78V. Actually it was at 14.9V the first time I saw this and then the M/B shut off by itself.

System is almost finished with everything except the hard drive- basically the ASUS M4A89GTD PRO/USB3 AM3 motherboard, CPU cooler and 3 chassis fans, one on each fan header.

P/S was at 12.57V when new. I checked a car battery I keep lying around, fully charged it a couple weeks ago, it came it at 13.47V which is close to the 13.8V I expect from a car battery, so I still trust my meter.

Unless someone can justify this, I really think I have to start an RMA with Corsair... at least I got my rebate already.

-HF

[Zero82z]

Yeah, RMA time.

[Oklahoma Wolf]

Is that a low battery symbol on the meter display? If so, change the battery. You won't get accuracy until you do.

[HangFire]

Is that a low battery symbol on the meter display? If so, change the battery. You won't get accuracy until you do.

Wolfie, you da man. That WAS a low battery symbol... been there so long I got used to it I guess... put a fresh 9V in there, and boom, 12.47 to 12.50 volts through a power up and reboot cycle.

Old 9V battery tested at 6.5V... not enough I guess. Unless measuring car batteries.

Thanks a lot, you saved me a LOT of trouble (and Corsair too).

-HF

[shinji2k]

That's still higher than I would expect to see unless it was being crossloaded (heavy 3.3V/5V load). It's certainly not dangerous anymore, but ATX spec is 12.6V max.

[Tator Tot]

That's still higher than I would expect to see unless it was being crossloaded (heavy 3.3V/5V load). It's certainly not dangerous anymore, but ATX spec is 12.6V max.

Could be some Margin of error on the DMM.

That or the connections not really secure (Between probes & source.)

I've had that issue before; got really crazy readings because the connection made between the probe and source wasn't secure.
I usually try to measure between multiple points.

[HangFire]

Dug up another meter... still looks good... I'm putting it into use.

-HF