The camera lens cover no longer opens when the camera is switched on. Tried replacing and removing battery powering down when lens extended. Reset to factory defaults doesn't make any difference. Tried lightly brushing the cover and using a hoover close by to remove any "specks" of dust / debris that may be preventing the mechanism working. You can easily move both halves of the cover assembly manually with a soft brush so it is not 'jammed' in that sense.