Which they do now from the last time I tested them, the phaser works as it should, no issues from what I recall, at most think the battery connectors just needed readjusting. The Communicator I needed to fix a slight crack in the plastic for the flip out grill as it wasn’t making contact with the switch which turned it on, other than that, it works fine! Tricorder, again the battery contacts needed a bit of work, the batteries which were originally in the machine were starting to go, so gave the contacts a clean and it’s all working again. The Tricorder scanner, that one mostly just needs the contacts adjusted, but for now just used some spare brass to make the connection (these can be removed) as it was a little fiddly sorting the contacts out. But in all, everything works as it should, all the lights work and all moving parts move as expected, have removed all batteries to prevent any corrosion in the future with the exception of the scanner as it’s awkward to get them out. If you have any other questions, feel free to ask!