title. Marantz 2230B Stereo Receiver. 1974.

date of work. 2020

work. Cleaned. Replaced all capacitors (including filter capacitors) and problematic pre-driver and phono transistors. Has Dolby FM circuit (defunct format from the 70s). Amp balanced. DC offset set. Cleaned all controls. Replaced tuning indicator and stereo lamps. Tuning Circuit aligned.