I have always had an unreasonable amount of fascination for magnets. Ask my aunt, I broke her expensive HMT (Hindustan Machine Tools) watch when I was 4 years old to see if it has a magnet in it.
29 years later... I developed a fascination for tape decks because of the Electro-magnetic, Analog, and Mechanical nature of them..
I work on all types of tape decks. Here are some of the ones that I worked on.
Sony WM D6 - Speed module repair, new mute module etc.
Sony WM D6C - New chip (Sergui helped me with chip), belts etc.
Sony WM D3/DD10/DII/II - New belts, gear, caps etc.
Panasonic RQ S55V- bent roller arms etc.
Nakamichi 250, 550 multiple units.
Nakamichi TD 500 : recap, repaired pots etc.
Here are some full size deck:
Nakamichi BX300, BX2, CR4, CassetteDeck 1, LX3
Kyocera D 601, 611, 811 (lapped heads also)
Braun C3 : lapped heads, recapped, and a new PS etc.
I transplanted a Sankyo Direct drive BLDC flywheel and motor from a parts Kyocera 801 into my Nakamichi CassetteDeck 1.
Vince guided me with all my head lapping adventures.