I joined the club myself this weekend, courtesy of a fellow Pinsider a couple of hours away from me. Game works great, but has some cosmetic issues I’ll be working my way through. I’ve been reading this thread for the last bit, and it’s really interesting.
Quoted from vid1900:if you own pins, keep a stock of TIP102 (more heavy duty than the TIP122) and 2n4401 transistors
Hmmmm... I’ve only had to change out a handful myself, but I always made a point of replacing a transistor with the exact same. I took a quick look online but didn’t see any sort of interchange or compatibility table.