This is a repair job my brother came across. Apparently there were a few of these replica Star Wars Thermal Detonators made with lights and sound. Unfortunately, the one I was asked to look at, was completely dead. It didn’t take me long to find out the problem. The owner of this prop made a very terrible but honest mistake. When it came time to replace the batteries, they accidentally replaced the required N size 1.5V batteries with the similarly sized A23 12V batteries. There’s no indication at all on the battery compartment or elsewhere to clue the owner in on what size to use. Very unfortunate. At this point the internal electronics are toast and will need to be replaced, however the owner didn’t want to spend the money to get it working again. Still, it’s a pretty cool prop.