Well, after a quick look at the manual, I'd suggest first checking for the correct voltages on the DC power supply outputs. If that is beyond your comfort zone, time to stop. The voltages quoted can easily kill if they have any current capability beyond 100ma, which they probably do! It looks like a challenge, and I used to repair the next generation of these. Where they graduated from tubes to transistors and still used large quantities of relays and recording tape. I'd volunteer, but my workbench is already covered with honey-do's, hobby projects, and STUFF.
John C.
