Hello David, Thank you for your inquiry! Sorry, the SeaLife DC 1000 replacement cameras are no longer available. Concerning the “replacement latch assembly”, you would need to send the camera to SeaLife for repair. You might want to conside upgrading your kit to the new SeaLife DC1400:
http://www.scuba.com/scuba-gear-535/168207/Sealife-DC1400-14-Megapixel-Underwater-Camera-and-HD-Video.html If you would like to place an order, please contact one of our certified Dive Instructors at SCUBA.com by calling 800-247-2822 <> 949-221-9300 or e-mail us at: info@scuba.com