[CUBE] Dead Cube saga continues...

[James Rice]

I've never had it happen with a Mac, but we had a whole series of cheap 
ATX supplies the went bad.  Sleeve bearing fans would seize then 
everytrhing would overheat.  When the supply failed, these particular 
supplies put 55 volt unregulated chopped DC on the +-12v, 3.3 and 5v 
lines at the same time.  It blew chips off the motherboards, drive 
controller boards, lots of magic smoke set free.  I'll never buy an ATX 
supply from Thailand labeled "Green Tech".

James

\Tom Davidson wrote:

> Sounds like you have a worst case DC-DC failure...
> When it blew, it took everything else in the cube with it.
> Apple's design has no protection for overload and when the
> board fails, it shorts the 28V brick supply to 5V or 3.3V,
> blowing out everything hooked up to those supplies.
>
> Realistically, you should have scrapped that machine and started
> over with a new system. You cant re-use any electronics from your
> original machine.
>
>
> ----------