Bedini Schematics for Class A Amp Models 802 & 803

I have a Bedini 803 with a slight hum in one channel and I have two Bedini 802's that are inoperable but obtained for parts. Both are loaded and haven't been cannibalized.

It is my desire to rebuild the 803 and 802 but I am in dire need of schematics. Would anyone have an idea as to how I might obtain them?

Any help would be much appreciated. Thanks, Mike