Hello!
I have a Bell & Howell Model 456 Autoload.
Lately I've been getting a problem with the lighting of the projected frame. It looks fine on the left side of the frame but it gets darker on the right side. It is like a gradient change of brightness towards the right side of the projected frame. The light bulb is the right one and seems to be installed correctly. Any ideas? Your help would be greatly appreciated, thank you.