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Another (medium power) transistor replaced on this JH-16. This time, a dead 2N3053 on the Capstan Servo Board that prevented the driving signal to reach the (high) power transistors of the capstan motor... totally preventing it from spinning! 😥 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #OpenReelRecorder #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager
I'm afraid that the solenoid for the head shield is definitely out of use... Won't bring it down anymore, though the command signal is there... Problem is, I'm also afraid this kind of solenoid has been unobtainium for a VERY, VERY long time now... 😰 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #OpenReelRecorder #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager
Capstan Servo Board recapped and ready for the tests! 😉 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #OpenReelRecorder #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager
All five faulty transistors replaced. Now I just can't wait to test them! 😉 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager
As expected, ALL four 2N2270 driving transistors on the driver boards of the tape brakes, pinch roller, tape lifter and head shield are completely dead. Same thing for the one on the Phase Locked Loop board... Replacement parts are in order, then 😉 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager (à Pilule & Pigeon)
The (Studio Piscine à Tokyo-) refurbished transport PSU seems to have improved things a "bit" since last year... ☺️ There are still missing functions (pinch roller, tape lifter and head shield don't move, and capstan doesn't spin either) but that is no big deal actually. Some dead transistors on the corresponding driver boards, anyone? 😉 #MCI #JH16 #MCIJH16 #MultitrackTapeMachine #16tracks2inches #VintageTapeRecorder #1976 #AnalogMultitrackTapeRecorder #Restoration #StudioPiluleEtPigeon #StudioPilule #StudioPiscineATokyo #TheGoodDoctorPrager (à Pilule & Pigeon)
