I just bought a robot-lawnmower (Husqvarna Automower 105), which is working perfectly.
But the charging station is making a loud 50 Hz noise all the time, even without the robot charging. I have uploaded a video with the noise here: https://streamable.com/dd35mh
Any suggestions on what I could do to fix this? Would adding a ferrite bead have any effect? Would appreciate any tips on what could help. I haaaate trafo-noise. :p