Bubbletrubble
Contributor
I've looked at what it would take to pull the little button o-rings out of the housing to clean them, but so far they haven't given me enough problems to want to risk it. I'd be interested to hear from anyone who's done this.
I just want to point out that disassembling the buttons on a Canon housing should not be feared at all. It's a very simple fix to the sticky button problem.Follow these instructions :
Matt Gieselman | Fixing sticky buttons on underwater camera housings
I subject my Canon UW housings to post-dive rinsing similar to what Banon recommends. Still, after 100+ dives, the buttons will get annoyingly sticky.
Matt Gieselman's DIY instructions work. Be careful when removing the E-clamp since it tends to fly off during the procedure. Lube the tiny o-ring with some silicone grease when re-assembling each button. Operate the button several times from outside/inside the case to ensure smooth function. Then, do a check-out dive with a paper towel (not your camera) inside the case. At depth, operate the buttons. Check the inside of the housing post-dive for any moisture. You'll be surprised by the results.