MDD G4 dual 867 won't power up with door closed

i am running my machine with 4 internal HDs. once was recently added, and upon doing so encountered a bizarre problem; with door open, and power on, if i close the door the machine goes into kernel panic. the machine will not power up with the door closed. so, i am sitting here with my machine's door open - the only way i can use it.
during trouble-shooting, i removed the drive recently installed and switched with another extra drive to see if the new drive was the culprit, and the same symptoms occurred. removing the additional 4th drive and trying with just 3 drives installed results in no problems.
please help

Hi! Sounds to me like you have a wire that's getting pinched or one that has a pin that's loose and closing the case pulls it far enough to keep it from making contact. Tom

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MDD G4 dual 867 won't power up with door closed

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