Replacing the power switch in this (late model) Marshall & Wendell
Ampico A is easy. Remove the old toggle and replace with a small wall
switch of the cheapest type, because they will be small. It requires
recutting the wooden yoke block for a longer switch body.
Trim off the metal mounting plate ends and mount by using two #3 wood
screws at a slight angle into the block. The plastic toggle handle is
drilled with a hole that will mount a short piece of welding rod,
super-glued in. That's all there is to it.
As a matter of fact, it's a good idea to replace them every time one is
rebuilt, because those switches are quick to go, once the piano starts
These same cheap wall switches (about 69 cents in a Home Depot hardware
store) also work for the early drawer switch, but very difficult to
arrange, mechanically. The late drawer model A is the easiest one to