I went to use my trusty ole sears timing light the other day and no bueno. Looks like the filament tube is burnt out. Beings that theres no parts for these, what are the chances that a simple led swap would work? The wires from the tube go to some capacitors or diodes? I dont know. Thats why you’re here. So would those components keep an led from firing like it should. Thanks for any help. Hate to make a wall hanger out of it just because of a blown bulb.