Biamp MCA8150

[alkyleda]

Hi there, Im after the service manual or schematics for a "Biamp MCA8150" 8 channel amplifier. It has an annoying hum/buzz that I would like to remedy. 

 

thanks in advance

[Fenda]

https://www.freeservicemanuals.net/3353062/biamp-mca-8150-mca8050-multi-channel-amplifiers-schematic.html