[G4] Re: MDD no start, grey screen, no bong

[Technophobic_Tom at comcast.net]

On Wed, 25 Apr 2007 10:36:18 -0700

>The power button is more than just a switch there is some brains 
>built into it (actually a circuit board with a switch and various
>components on it). If there is a problem with it your machine will
>not boot.

Right, that's why I suggested it as a possible cause. My thinking is 
that if it's a simple switch, i.e., spst, then the fact that anything 
along the lines of a startup happens means the switch is working. 
That obviously says nothing about the associated circuitry on the 
board to which the button is attached. However, if the switch is dpdt 
then one contact could initiate part of the startup sequence but if 
the other contact wasn't "making", the whole procedure might fail.

Can I pull the FPB cable and use a older Apple USB keyboard with power key?

>Also you may want to try removing each RAM stick and
>booting with just one you could have a bad stick.

Tried each stick separately, in different sockets, and all 
combinations thereof. Nothing. Also tried to boot without any memory 
to see if an error is detected. The POST must not have gotten even 
that far as there was no signal/beep.