Another great piece of Marantz history a 3300 preamp. This unit has a power supply mounted in the middle of the chassis to the bottom plate and three boards that have pins to connect to the main board running behind the faceplate. The pins should be cleaned well and lubricated to remove any oxidation and bring back their shiny brass finish. This preamp had previous work done however all electrolytic capacitors were replaced. Some of the signal path film caps were replaced as well. The original design used axial leaded capacitors however since I want to use high temp high reliability Panasonic caps so I used FC series radial style and bent the legs to fit nicely in the thru holes. Takes some extra time but looks great. Here’s some before and after pics and I’ll post a final pic of the face after cleanup.
