Echoplex EP-3 Troubleshooting no audio

[Unclebuncle]

Hoping I can find some help and guidance as this is the first echoplex that I’ve taken apart and decided to work on. There are two main concerns of...

[Brian Swatton]

I may need to try and repair one of these desks in a studio rather than at my workshop, so hoping to get info on best access and circuit diagrams if at all...