This Macintosh Plus 1MB system is new to our collection. Although it was in working condition prior to shipment, somehow the transformer was completely broken off of the power supply board when we received it. Luckily, no damage was caused to the internal components and we were able to reattach it and the machine is now working perfectly. We do have one shift key that has a broken stem that needs replacement.
Model number: M0001A
Serial #: F910153M0001A
Model released in 1986.
Complete system in working order:
Cleaning, testing and getting ready to reassemble:
The broken power supply board (red circle shows where the transformer should be):