How to remove and replace the electronic side board on an Agilent 5977B Mass Selective Detector (MSD). In this 5-minute, 46-second video, I demonstrate the process of removing and installing the MSD side board during instrument repair. The side board is responsible for several critical mass spectrometer functions, including: - Generating RF and DC voltages for the quadrupole - Controlling filament emission current and electron energy - Switching between filaments - Monitoring