Im having some trouble finding a fault in channel one of a 3600vz. The high side npn driver bias is very low. 25mV. across R02. The output is clipped off on the upper swing with 1k in and 8 ohm loading. if the loading is removed then the output is a clean sine wave. Can someone point me in the right direction? I cant find a schematic just a service manual. Any help is appreciated.