Trying to find my Cyber Twin Schematics. I will post when I figure out the PS voltages.

How many power supplies are there and which one runs the output stage? Someone on another forum said Enzo knows his stuff on Cyber Twins. Have you ever had the problem that I am experiencing? Is there a specific area that I should be looking at?

Hello Enzo,
Correct no output from speakers. No output from phones or XLR. No mster volume readout on LCD when mater volume pot is moved. tried FX returns- zero. Sorry about MOSFET as I am used to the old style transistors PNP, NPN TP3 . Any ideas? Thanks

I have 3 Cybertwins, 2 work fine and  one that powers up and all the knobs move and are active but the master volume. There is a slight pop when turned on but nothing from the input. There is a signal from "send" the output MOSFETs are heating and some times the amp will go to ten, then lots of sound. Replaced tubes, checked for ribbon connections, reformatted CMOS, Any ideas?