Hello! I have Anita MK 9, and I am trying to repair it for years.
I have exchanged broken dekatron GS10D to soviet A104, exchange broken vacuum tube, some capacitors and hundreds resistors, but the calculator does not feel better. Common diodes and transistors look fine, and the selenium diodes are hard to test (so I do not want test them all).
The calculator looks like this now:
https://youtube.com/shorts/Mg1xMzhk4RoAnd this is dekatron, it spins, but looks strange:
https://youtube.com/shorts/34Jyv5GG8KIAre there probably service manuals for MK9, repairing advises or something like this somewhere?