Hello, Does anyone have this battery operated unit which lights up certain bulbs? If so pm me as a friend of mine is having trouble with his.

Thanks,

Chuck

Was the the model?
http://www.wellingtonent.com/products/mswitchb.html

There was a larger model on the market years ago with large bulbs and a silver metal box made in a large and smaller boxes design.

The very early models worked with a lot of reed switches. I would think most problems would have to do with corrosion, as most magicians just do not store their props properly.