My Ferm FBH 620 SDS drill broke down on me when breaking up some concrete. I have just looked at the brushes and one was partially burnt out.
I filed off the burnt part and refitted it and it worked intermittingly for a while, but then stopped again.
Do I need to replace both brushes to get it working again.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix drills.