Not something I would normally post about, but I’ve gone through several Sonicare toothbrushes (toothbrushii? teethbrush?) over the past few years. They always fail the same way; the metal rod that connects to the toothbrush head seems to break off inside the unit and creates a horrible buzzing noise. When the last unit failed I took it apart to see where / why the unit failed and discovered that a simple small screw had come loose. Of course at that time I had broken the toothbrush so badly that I couldn’t fix it.

Fast forward 6 months later and a new brush did the same thing. There are videos floating around on YouTube that explain how to get this toothbrush apart. Once it’s apart the internals look like:

This screw here:

Needs to be tightened. That’s it!