So it came to pass that I ended up with three cabinets for $100 each. A Great Golf in a Midway cabaret, some Toaplan run-n-gun in a Taito Qix cabinet, and… A Joust(!) in its original cabinet.
I agreed to purchase all three sight-unseen. When I get them all home, the golf game worked except for a rolling screen, the run-n-gun has an board issue where some sprites are being displayed at the wrong horizontal locations, and the Joust?
Well, the Joust was dead. Simple static video (monitor needs a cap kit, too), watchdog barking, no response to inputs, nothing on the LED on the ROM board.