Review (5/5): worked well
Fast arrival via Prime. Minimalist packaging (all that was needed imo. I needed to apply much more pressure than I expected to disassemble. The way the pieces went back together was minimally confusing, but if you slow down the video pretty easy to do. There's a little tab that interlocks when you fit the motor module to the control module, also tabs on the rubber cushion piece that sits on the front of the motor module The only tool you need is a soldering pencil. You do not need to be god's gift to soldering --a touch and the wires come off,, a touch and they stick back down. I did not need to add extra solder
Great value: to replace the toothbrush is $100 plus. The part looked identical to the original. So for less than $30 you have a tooth brush that works like new. Mine had become a wimpy brusher and did almost nothing but make the humming noise. There is a you tube from someone else that shows how to disassemble the motor module and fix it it you have the time and the inclination. A bit fussy to do but if you screw it up this will be available to back it up. I'd encourage you to watch the YouTube if you question your ability to do this.
I was very happy with the whole deal! my teeth are too!
great product!