On Sun, Feb 5, 2017 at 7:59 PM, Christopher Havel laserhawk64@gmail.com wrote:
each of the two that Osborne used, Siemens and MPI. The MPI one (a Model 51) has a defective spindle motor... it spins by hand, but not by electricity, so I suspect the windings have shorted out inside.
check the spring-loaded contacts (brushes). you'll probably find they've worn to nothing over time.