Depends on the repair, Scott.

Yer qualified for many certain things you may encounter. '

A broken hammer shaft, for instance. Wood glue and wirewrap and back in business, or replace the shaft entirely. A relatively easy repair that can be handled with simple hand tools.

Replacing a keycap.

Repair/replace a pedal rod.

etc.

Since you're an engineer, if you study the various and few piano actions, understanding comes and adjustment comes along with it.

First thing to know is that the Grand Piano action has a repeater and the upright and lowly Schpinette do not. (Repeater check - tap a key with two fingers repeated quickly and see how fast the piano can actually play the repeated notes. Grand action can do it. )

The good technician knows when a certain task calls for more experience and knows when to hand it off to same.

You can often simply tell a potential customer that the problem is outside the scope of what you came prepared to do and then recommend to them who to call. Your inside knowledge of even that much is likely a lot more than they know.


--Mac