Ann,
I owned a EA-5 for a good many years. There is a hard inilialize by pressing a combination of keys. There is also a diagnostic test by pressing a combination. I do not remember the combinations but I am sure someone will. Strange that the repair man did not try this. It was the first thing they did when a friend had a problem with his EA. This could bring the organ back to factory settings.
Is your friend aware...it can be taken apart (2 pieces) with a couple of screws for easy transport.
Fran in Florida
Fran in Florida