My 30 years old AKAI AM-67 is producing an annoying random clicking sound, often continuous and very rapid, even after disconnecting all IN and OUT cables.
It tends to click more while I am switching the "SPEAKERS" selector, clicks very fast with selector switched on A+B, a bit less when on A and on B, and does not click at all with selector switched to OFF. When on OFF I can use my headphone without any problems. Do you recognize this as an easy symptom to diagnose or a difficult one?
If it is nothing very obvious, I am going to take the ampli the only local lab available in my village. But I do not know if I should trust them with vintage equipment.