Looking for schematics for Forte Audio model 5 amp

Hello, I want to make effort in repairing my Forte Audio Model 5 stereo amp. It seems to have blown a channel. My local repair facility was not successful in obtaining the schematics from them. They would not provide. Something they do not do.

I have a matching pre-amp that work. Again, want to seek for this schematic. Does anyone have any resources and or have the schematic to this amp?

I am new to the 2 channel world. I inherited these 2 pieces from a client I was doing some work for.

Thank you for your time and efforts.