John’s McIntosh MAC 4100

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