This McIntosh MAC 4100 came in for a bench test and control cleaning. The amp section was found to be putting out less power than spec and hard clipping early. A good reconditioning was done and the receiver will break in for several hours before going home. A mix of the highest quality audio capacitors were used. All harnesses were cleaned to ensure a good connection. This is the best you can do to bring back the receiver back to it’s former glory.
First up was the power supply
Preamp
Amp boards
Power supply filter caps
Volume control boards
EQ board
