Philips Sonicare toothbrush doesn't vibrate with power on. Here's an easy fix.

My son&Sonicare brush didn&vibrate with power on. I pulled the inner parts out and found the vibrator was not in its correct location. As I¬ a professional technician, I decided to mildly crush the casing that holds the vibrator inside so it can comes back to where it&supposed to be. This is quite easy fix for those not professional, but please be aware crushing the inner casing may cause a permanent damage to the product. Hence this should be the last resort before you dump your toothbrush into a trashcan.