Did this to inspect the inside of the zoom lever, which is broken and will (only with difficulty) zoom in, and won't (at all) zoom out.

Followed the instructions to the letter but, after all screws removed, was unable to get the back panel separated from the body of the camera. Either there is glue, or some sort of latching mechanism present - or something missing in the description. Didn't want to break anything completely, as camera is still just about usable - so I gave up. I don't think the camera will be water-proof any more after this.