John Tuttle said about electronic pianos:

>Further, as the technology improves, the older mechanisms will become
>harder and harder to support.  That has been the track record for
>electronic players ever since I've been in the player repair business.
>I don't like having to tell people, "Sorry, it can't be repaired, no
>one has the parts."

It's general practice in electronics.  Customers who bought ten years
and one day ago are dead meat.  I worked for a branch of the Dutch
conglomerate Philips.  When the great digital revolution in telephone
equipment took place at the end of the '70s, Philips closed not just the
manufacture of the earlier equipment but the entire servicing operation,
making us all redundant.

Two big and influential customers then said to them, "If that's how you
regard after-sales service, you can forget trying to sell anything new to
us."  Philips panicked and encouraged a cowboy outfit to undertake the
servicing -- it immediately went bankrupt and I went back as a consultant
to do it for them.

With the best will in the world, it wasn't easy, because within a few
years a lot of the original components essential to the original design
went off the market.  You could find replacements but they often didn't
fit into the same boxes, and sometimes had new characteristics that made
them do weird things in the old circuits.  If I'd been supporting pianos,
I'd've made completely new replacement boards with nothing in common with
the old except the mounting points -- and I'd've done it again every six
or seven years.

Dan Wilson