My MDD basically works. What happens is that after I turn it off, it will not go back on again until I unplug the power cord and re-connect it. Also there is a problem with PRAM batteries. I start and the time is reset to 1904 every time... I replace the PRAM batteries, tried placing fully-chardged ones in there. They lose their charge and don't do anything.

All of this does not prevent me from using my MDD, but it is quite inconvenient. This happened with the old logic board and CPU combo I replaced, so I guess it must be the PSU? Anybody else ever have this problem, or know how to fix it?