elfyhead
New member
so the swamp release and thing eject hole solenoids stopped working on my TAF. they're on the same solenoid power circuit, just connect to the drive via different transistors. the paper on the swamp release coil had burn marks, the sleeve was stuck to the coil, and it was reading no resistance across the lugs, so i went ahead and ordered a new coil.
it arrived today, and i just put it in, and no luck. turns out there is no voltage at the lugs. tested pin 1 on J106, which is the one supplying both of those coils (violet/green wire), and no voltage there. the other pins on J106 test fine (around +70V).
does this mean one of the drive transistors is bad? that would be Q20 for swamp release or Q24 for thing eject hole. my guess would be Q20, which could also have caused the coil to burn up i guess?
or is there something else i should check first? i hate to start desoldering the transistors from the power board to test them if i'm being stupid and not thinking of something simple that could cause the problem.
it arrived today, and i just put it in, and no luck. turns out there is no voltage at the lugs. tested pin 1 on J106, which is the one supplying both of those coils (violet/green wire), and no voltage there. the other pins on J106 test fine (around +70V).
does this mean one of the drive transistors is bad? that would be Q20 for swamp release or Q24 for thing eject hole. my guess would be Q20, which could also have caused the coil to burn up i guess?
or is there something else i should check first? i hate to start desoldering the transistors from the power board to test them if i'm being stupid and not thinking of something simple that could cause the problem.