I just purchased an older Kodak slide projector with a carousel on top. Everything works fine but the carousel won't advance. When you click the next button, the plastic arm that should advance the carousel will only move a little and not the full range to move the carousel to the next slide.

Various ideas here and a couple of videos Irena. Or take it to a good camera shop for service and cleaning.

https://www.google.com/search?q=Kodak+Carousel+Slide+Projector+slides+don%27t+drop+down

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Repairing carousel projectors. Does it have a remote? Stuck button?

https://www.google.com/search?q=Kodak+carousel+5600+slide+projector+wont+stop+advancing

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Chances are what you need is a new cycle solenoid LINK. They can be purchased from: www.micro-tools.com They should have instructions to help you install the new part, as well. Good Luck!!
Jim

Detatchable power cords for KODAK Carousel Slide Projectors can be purchased from: www.micro-tools.com
or: www.vinevalleyimaging.com
Good Luck!! jim

The Carousel 850 is 40-45 years old. The symptoms you describe indicate the timing is off. Timing is an "adjust & test"..... try a SMALL adjustment and then test it.... adjust again & test again. Repeat until you get smooth tray action. See the attached illustration:

You're correct!! The Kodak Carousel 600 does not have an ADVANCE button. To advance the tray you LIGHTLY depress the SELECT bar on the edge of the projector. There is no reverse capability, other than holding the SELECT bar down fully and rotating the tray by hand. Enjoy your projector!! Jim

As long as the slide film is in 2"x2" mounts, yes! I would advise you to use an 80-slide tray as opposed to a 140-slide tray. The individual slide compartments in an 80-slide tray are wider, making it more forgiving to older, possibly warped slides. 80-slide trays can still be purchased from: www.vinevalleyimaging.com. Good Luck! Jim

If you are using a 140 tray with older slides, that's very logical! Over time, slides develop a "side-to-side curve". Because the Carousel 140 tray stretches the design limits of the projector to be able to accurately return the slide to the tray, the slightest bend or "dog-ear"(the fraying of the corner of the slide) will cause exactly the problem you're having. If you have a Kodak 80-Slide tray, try it. Chances are that it will work fine. If it does work fine, then you have 2 options: 1. Move all your slides into Carousel 80 Trays.
2. Have your slides re-mounted (that is, have the paper mounts replaced).
I hope this helps !!

Your older Carousel 80 and 140 trays will work on any newer KODAK Slide Projector.

This is a very common problem with these old Kodak projectors and is caused by a small part called the solenoid link that can be purchased separately or as part of this kit: https://www.micro-tools.com/store/item_detail.aspx?ItemCode=KODAK-KIT

There is also a guy on eBay, "atomk", who sells kits with very clear instructions on how to repair this problem yourself. Search for "Kodak Carousel Projector ADVANCE Repair Kit".

Good luck!