Keystone 8MM best Vintage Projector PLEASE READ

Product Name: Keystone 8MM best Vintage Projector PLEASE READ
It's in wonderful condition and best it does work. I did not have any knowledge of using this projector, though I did try taking old family film through it and using it. After playing around with the features, It did have a burning smell. The cord is excellent and not damaged, but the bulb is original. Not sure if there is any factors there. It just may be I was playing around with the knobs too much not knowing what I was doing, so I turned it off. Just a warning to someone wiser than myself.