My Bally Display tester:
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Controlled by a Microchip controller. I want to make another one to test Zaccaria Displays. Note: there was still a bug when I took the picture. Now it shows 1 2 3 4 5 6 (7) as well as 5 other test patterns.
One of my board testers, also based on a Microchip controller. This one is for testing Gottlieb driverboards. I made similar testers for Bally boards as well.
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Some tools I used for repairing Atari Gen 1 CPU boards:
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And this is a brilliant one when removing the legs at the back.....