[PROBLEM] Beosound Level: Microphone not working

(Worked a couple of hours, then the mic ceased to work!)

For the second time the microphone stopped working out of the blue. For weeks I tried restarts, factory resets and what not. On the web several posts recommended to take off the cover, and remove the battery for ten minutes. 

Recipe:

1. Remove the cover.
2. Take a screwdriver and remove the 12 screws over the battery.
3. Remove the battery.
4. Wait 10 minutes.
5. Put the battery back.
6. Remount everything.

The Level will start as soon as it it repowered. 

The video from YouTube below will give you a demonstration of the method.