If you turn the on/off button, and your nose trimmer does not start:
1) The trimming element could be blocked by dirt, soak the cutting element of the nose trimmer in a bowl of warm water with a little soap for about 2 minutes.
2) The battery could be empty, replace the battery with a new one.
3) The battery could have been inserted incorrectly, make sure the '+' pole faces down.
If your nose trimmer still does not work, please take it to your local Philips dealer or Consumer Care Center.