Made No Difference At All!
I got this for a model HX751v. I was trying to fix my Sonicare's issue of loud noise and weak vibration. Thought this was "2. when you feel the bad vibration while brushing your teeth". This part fit. The video helped. The install wasn't all that hard (but soldering of the sensor wire was - but got it done). Sadly, all this time, money, and effort made no difference whatsoever. While it was apart, I was able to seriously bench-test the battery and it does not seem to be the issue. So don't know what is. Of course, your mileage may vary.<br /><br />PS - in my case, most of the issue was caused by insufficient gap between the permanent and electro magnets. See the many You Tube and websites about this and how to tear down your handle.
Rating: 1 stars