myPinballs Gottlieb System 80B MPU Switch Matrix Failure

Chris Hibler documents bench-repairing a myPinballs Gottlieb System 80B MPU board returned by a client, which had a dead 74HCT00 and possible high-voltage short on the switch matrix. After replacing chips, testing 6532s, cleaning RAM, and loading Monte Carlo free-play ROMs, he verified lamps, solenoids, switches and display, and returned the board with a sound board he modified. The video is a repair walkthrough rather than industry news.