Remove vibrato (tremolo) on Normal Channel

[Axtman]

I am working on a friend's Fender DRRI with a Hoffman AB763 turret board My friend bought the amp with the board already installed and I am correcting a few wiring mistakes and component values. I was puzzled why the vibrator was on the Normal Channel. I then realized it was wired like a Princeton, and the vibrato varies the bias on the output tubes. My friend only wants vibrato on the Vibrato Channel and not on the Normal Channel.

Does anyone have a wiring diagram for me to remove the vibrator from the bias and add an optoisolator, like a typical Deluxe Reverb? Thanks.

[tubeswell]

Use a Deluxe Reverb layout diagram

[dogburn]

Those are two rather different circuits, so it may not be a simple switch of components. Could you post a photo of the circuit board? You may well find it easier to get a new circuit board to get to the classic AB763 Deluxe Reverb circuit rather than re-wiring what's in there now.

[Merlin]

How simple do you want this mod to be? This is the simplest arrangement that springs to mind, based on Hoffmans schematic.

[Axtman]

Thank you!