No damage!!!!!!!!!! :) :) :) Was: I did something really dumb... what's the damage???

[joelryan3k]

I couldn't figure out why I couldn't get my new Tyan S3891 with 2 opterons and 4GB RAM to post. Fiddled with it for an hour before I researched the power supply a 2nd time and realized it's an ATX-GES. The mainboard requires an EPS12V .

I'm already aware it's a 'very bad thing'. The mainboard manual made that quite clear, indicating it can (or will) damage mainboard, CPU, and memory. I'm hoping this is one of those cases where the warning message is really harsh but usually everything turns out ok.

I had researched my supply (an EMACS P2G-6460P) and it appears it ships in both EPS12V AND ATX-GEN. As far as I knew, it was the right PS.

I'm going out tomorrow to get an EPS12V supply but I'd like to know if anyone's ever done this (or knew someone who did) and what the results were.

As a side note, I'm sure there are some who know the very sickening feeling of thinking you just fried some very, very expensive equipment. It actually feels good confessing it . I will post with the final outcome.

 

[phisrow]

Looking at http://www.rackmount.com/Rackacc/ATXGES.htm, I'm not quite sure. I'd guess that the Processor power connector probably didn't damage anything connected to it(I'm a trifle worried about Pin 1; but the others are probably OK).
The main 24 pin connector, though, looks a trifle more ominous. There are a fair few pins were significant voltage mismatches occur. With any luck, the mainboard will either shrug it off, or at least dive in front of the CPUs and RAM and take the bullet.

Do keep us posted.

 

[GalvanizedYankee]

http://www.zippyusa.com/ would have the pin-outs for both. See what voltage you sent where. Lower voltage into a high voltage pin wouldn't hurt but sending 12V into a 5V pin...Well.

 

[joelryan3k]

I'm dying to know why they didn't idiot-proof the two connectors if they're gonna switch the voltages around like that.

 

[phisrow]

The PSU standards guys don't seem to be terribly good at that, especially given how critical it can be. Who else remembers the AT motherboard connectors that, if put in the wrong order, would bork the board?

For those who don't: http://www.informit.com/content/images/chap3_078972927X/elementLinks/03fig06.jpg
The text isn't kidding. Luckily the machine I killed was a piece of junk by the time I got my hands on it.

 

[joelryan3k]

Plugged in a new EPS12V supply and it WORKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Anyway... I'm very happy. Thanks for all your help. Please tell the next poor fool who plugs an ATX-GES supply into an EPS12V mainboard that it may not burn out his components after all.

 

[GalvanizedYankee]

It was probably the built in protection circuits of the Zippy/Emacs that saved the mainboard.
All PSUs of quality have these circuits.


...Galvanized

 

[phisrow]

w00t, in any case.