Mata Hari EM
Bally, 1977You're currently viewing posts by Pinsider Quench.
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Quoted from zacaj:I've worked on a number of games with missing diodes and the CPU always reboots quickly. Never had the transistor die before I noticed the issue due to the CPU resets.
I've seen driver transistors fail and short the very first time they try to activate a coil with a missing/open circuit diode. The coil diodes are there to primarily protect the driver transistors on solid state games from back EMF voltages.
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