[charlie_ps2]

You've possibly got multiple causes. Check these items:

1. The Magic 2 hasn't shifted and/or isn't grounding
2. The W wire hasn't come off
3. Other wires haven't come adrift
4. Power/GND are at least 24 awg and are less than 4cms long

I've looked up some similar reports and these wre the fixes. The disk tray motor is the difference which is why I suggest wires adrift or chip grounding.