So about 4 months ago I got back into the hobby and took my grandson out for our first launch. The controller didn't work. Went and tried 4 others, non of them worked! I cut the wire off one, got a 9v battery walked across the street and fired one off. It landed on the church roof, slid off the front and I thought it was going to get hung up on the cross. Thankfully it missed the cross and fell onto an overhang and hung on gutter just dangling. I retrieved with an extendo stick. Anyways, I'm a seasoned electronics tech and know how these things work. WHY would all 5 not work? So I rechecked them all today. One flashed and went out, probably blew the incandesent bulb, a black controller. One worked but blinked with a jiggle of the controller, the oldest controller, blue). 3 did not work at all, one black and two red. A red one was just manufactured 10 months ago, and the other red, back in 2016. No idea about the black. I even tried crossing my fingers and toes and that didn't help. Am I missing something? I want to tear into them, but all are sealed except the blue. I don't want to break them, yet. Is there a good way to get them apart? Right now I'm using a 12vSLA with the sacrificed launch wire. I have a button, 4 switches and a disconnect that I'm going to put into a plastic ammo box. It will be a 4 bang controller for the 4 position launch stand I'm building. Still gathering parts. Is there any help for me? Does anyone have a nice schematic? I've scratched one out, but would be happier with a better version. TIA.