I am not an electrical engineer.
I started at the firm I am working with repairing transmitters for NMR systems.
Over the years the modules became to complex to repair onsite.
Now they do exchange complete modules.
I recently made a change in my career.
I moved to an other department that uses mass spectrometers for bacteria and fungy determination.
My job now is maintaining the mass spectrometers at hospitals and other laboraties.