Hi folks. I have an MA-6100 that is making sort of a hammering sound. It gets louder with volume and is only present on the Tuner 2, Aux, and Tape inputs. Seriously. It is much stronger on the left channel but the right channel has it very faintly. I have replaced all the electrolytic caps in the amp boards and preamp boards. When I hit the pair of BC416C transistors on each of the preamp boards, the hammering sound gets fainter and then disappears, so I'm assuming those are the issue. I looked around online for a sub for these but was not able to find anything common that would replace them. Does anyone know of a good sub for the BC416C? Also, what about the BC239C, as long as I'm in there?
Finally, it looks like the BC416C pinout is CBE--is that definitely the case?
Finally, it looks like the BC416C pinout is CBE--is that definitely the case?