Mini keeps shutting down when in sleep mode!!

[finn313]

So this past week when my mini hasn't stayed in sleep mode, it shuts itself down about a minute later after being in sleep mode. I haven't changed any of my settings in a year and a half, normally it would stay in sleep mode until i come back to it and logged on again. When it does shut down i just cannot power back on i have to unplug the adapter then replug it in for it to start up again. I've searched google and on here for possible ideas. I wouldn't think it to be overheating since I'm not running any applications when i put it in sleep. It might be the power supply since i have to do that process to get it to work again. Let me know what could be causing this or ways to troubleshoot this problem.

 

[ninabear]

Did you find out what was wrong? I'm having the same problem with my power mac g5. 2 1/2 years ago I had to get the power supply replaced because it kept shutting off & eventually couldn't turn it on at all.

But now it's doing just as you described. I'm hoping it's an easy fix....

 

[UltraNEO*]

Try resetting the SMC. sometimes doing so will resolve all sorts of power issues.