Midway Space Invaders arcade pcb

Can’t call this one a repair as such as a non-booting original Space Invaders was made to boot just by reseating the CPU. Although this is a classic black and white game, you can make it run with a regular switching PSU that supplies +5V,-5V and 12V and a monitor capable of composite video input (as opposed to regular arcade RGB + sync).  Notice the unusual ‘L shaped’ design with the sound board at a right angle to the main board.