I have two film viewers I am "fixing" at the moment.
The first unit is a Verlux unit purchased last year which was supposed to be 240V but nobody checked the item and was actually 110V. Apparent damage is one lowly resistor fried. I cannot find a website for Verlux and I was interested in discussing with them what Ohm rated resistor I require to fix this item. If anybody knows of their contact details it would be highly appreciated.