Solving the remaining problems

As said before I had to clean the lower keyboard again because I was not thorough enough the first time. I used the same method as for the upper keyboard http://eminentunique310restauration.blogspot.com/2008/10/cleaning-upper-manual-key-contacts.html.
This time the result was perfect.



Also in the upper keyboard print there where two defect germanium diodes. I replaced them the same way as for the lower keyboard. http://eminentunique310restauration.blogspot.com/2008/09/repairing-non-sounding-note.html