[ChrisH]

Originally Posted by ravena

Our power distribution board started making noises. It makes both a mid level hum and a separate crackling or arcing noise. All lights are correct and everything else seems to work.

Anyone else experienced anything like this?

Something else to check is that if you have the camera installed its mounting is electrically isolated from the rest of the robot. We had a loose wire touching the frame and causing sparks before we discovered and corrected this problem.