[G4] MDD sudden quits

[keithw]

Jay E. Krauss, Jr. wrote:
>     I have two MDD G4s, both maxed out with four hard drives and 2 GB 
> RAM and running OS X 10.4.2. One gives me no problems; the other has 
> developed the nasty habit of suddenly turning itself off. I've taken it 
> to an Apple authorized service center once and a logic board was 
> replaced. This solved the problem for about a month, now it is beginning 
> to happen again. Tech Tool Pro detects no problems with any of its 
> tests. The hard drives check out with both Disk Warrior and Disk Genius. 
> I've hooked it to a UPS to eliminate possible electrical fluctuations. 
> The CPU temperature stays under 59° C and the hard drive temperatures 
> 37-44°C (similar to the functioning unit).
>     Has anyone else run into this problem, and if so, was there a 
> solution found?

I haven't any idea, but having a MDD G4 myself, I sure hope someone can 
lend some sense to all of this!
Much good luck,

keith whaley