I recently dug out my Kodak 850H projector to play with. It worked for probably just one minute then it stopped advancing or backward of slides. It looked like a dreaded broken plastic link issue of Kodak projectors. So I bought a repair kit which contains the plastic link and a locking pin for the link. It took me a good 3 to 4 hours of time to finally get it replaced. Sure enough the original plastic link was broken into pieces inside the projector. So I was so glad that the replacement went well. Well, it did not work. I could hear the solenoid clicking but still no slide advance or backward still. Does anyone have any experience in this kind of repair? I am pretty sure the new plastic link was successfully installed. So what could be still wrong? The projector is otherwise in beautiful condition. I really hope to be able to fix it. Thanks for any advices. Sorry this is not a repair of a camera. But this subforum is the only repair forum in Photrio so I post this here.