I had a rough day at work, wife had a rough day, not good. We carpool. Got home, wife gets on computer in barn, I decide to get the swarm hive at the back of the barn down to a more manageable level. I had thrown a second box on them about 2 weeks ago with foundation in it. Shouldn't be very heavy (I have a weak right arm past horizontal). I slid the hive off to set it on a table 2 1/2' lower, They had already built out the entire top box. It tilted, top box came off, landed upside down. Bees were, well, very upset. Oh yeah, I had shorts on, Fl. ya know. As I am straightening up the hive after changing pants, wife lets me know the monitor has caught on fire. I run in and sure enough flames coming out of the bottom of the monitor. Jerk all plugs out of the battery backup. It goes out. Finished putting hive back together. Bees are still upset today, I checked, queen is ok.