Hello, I am working on a Wurlitzer Model 1203 player piano
from the 1970s. It is one of the best preserved examples of
this particular instrument that I have ever seen.

I replaced the fuse in the box down on the right side bottom
and then the roll will turn, but I cannot get the vacuum pump
to turn on. I tested the vacuum pump directly and it works fine.

Does anyone know these pianos well enough to figure out the
old-fashioned electronics to make this instrument work again?

Thanks,
Jere DeBacker
Denver, Colorado