« Reply #1 on: December 07, 2022, 01:42:15 AM »
Well we don’t know what game it is… Turn the game on, if the coil immediately fires, undo one of the four plugs, unplugging it. Still firing? Unplug another one. When you find the one that’s powering the coil lightly tap it to the connector, should spark only that one pin, and follow it back to the transistor. If it’s the same transistor that was circled, then maybe the pre-driver is bad. Maybe it got accidentally smashed and the wires are touching on the leads to the board?

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