Recently I opened up my table to try and help William13 find an adjustment screw. Since I had to take the top off completely I decided to go ahead and refurb it. I found all of the transistors and the opamp are still available but the microprocessor is not. A few of the transistors are about to disappear though. One has been obsoleted already and stocks are depleting fast. Old stock of the microprocessor can be found if you search hard enough. If anyone is interested, mine is now done and working like new, should be good for another 20 some years.
Regards,
Ron.

