Mac Mini 2011 Server doesn't turn on

[TheMasamune]

Hi everybody !

I have a Mac Mini, model 2011 server, and, it doesn't start.
I explain : One day, I powered a USB hub with an universal adapter, and chose the wrong voltage...
I connected it to the Mac Mini, everything was fine. I put it to sleep, and, it never woke up !!

(When I realize it doesn't boot, I tried to rescue my discs to another mac mini, connected the USB hub, and BAM, Kernel Panic)


Now, I disassemble it. I tested the internal power supply : 11.80V
Sometimes, when I plug the power adapter, it makes a small sound : One small beep, from the power adapter itself. And sometimes 4 or 5 beeps.
This sounds not like a real "beep" but like the adapter turning on and off.

I understand my mistake, and I hate myself... I didn't have to use this adapter for another purpose...
But I don't understand, my other Mac Mini (2009) reacts, and seems protected against overpowerd USB... The 2011 isn't ?


Have you an idea ? Power Supply Default ? Logic Board ?
If it's the logic board, I can buy another Mac Mini... But if it's the Power Supply, It's 40$ on eBay !

Thanks a lot !!
(And sorry for my english, I'm french)