Williams Speaker Test Board - Sys9-11, Data East - and anything else, really! Sega flipper board I used one of these

I used one of these to test a Spy Hunter

Can be used to replace a single display

Phantom of the Opera

making it easy to identify specific faulty transistors or chips

Williams Speaker Test Board - Sys9-11, Data East - and anything else, really! Sega flipper board I used one of theseQuick and easy testing of the audio output for Williams and Data East pinball machines. Including, but not exclusive to System 9 11 Depending on which version, this can be placed on the J15 header of the MPU, or J5(?) of the sound board (see video). Good for bench testing, or diagnosing wiring speaker issues. The speaker is an 8 Ohm, 1 Watt, and is pretty versatile in testing most pinball and arcade speakers. I used one of these to test a Spy Hunter,