Before you disassemble your camera try the following:
[1] With the camera switched off slide the 'Zoom lever' to the right (T) position and hold down the 'Shutter' button for a few seconds then switch the camera on. You need to still be holding the 'Zoom lever' and 'Shutter' button.
This seems to force reset the zoom to full extent. Then switch off the camera, the zoom may stay fully extended. Try cleaning the outside of the lens barrels to make sure there is no dirt on them.
[2] Then With the camera switched off slide the 'Zoom lever' to the left (W) position and hold down the 'Shutter' button for a few seconds then switch the camera on. You need to still be holding the 'Zoom lever' and 'Shutter' button.
This seems to force reset the zoom to minimum extent. Then switch the camera off.
Hopefully the camera is now in is normal closed off position. Switch the camera on and it should be operating normally. If not repeat the above a couple of times.
Gray
July 2014