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Old 06-25-2011, 09:05 AM   #1
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Default Think i've killed the ignition driver

In an effort to get a usable Tach signal we were using a LED Node light to test the Trigger wire on the Toyota COP's (2&3 cylinder) which was flashing away which is great but then while running the engine i dropped to two cylinders.

Now the car starts but only fires on 1&4, there is a 12v and earth on 2&3 but the trigger signal seem really weak.

Could anyone help me in the location on the board and information on what i might have damaged?

as ever would be really grateful and with less than 2 weeks until my Germany Ring trip would be nice to take a working car.

1994 1.8 MSPNP (with invert ignition mod https://www.miataturbo.net/megasquirt-18/better-spark-out-circuit-33964/)

thanks
Phil
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Old 06-28-2011, 07:11 PM   #2
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thanks to Matt worked out that one of the 2N2222 transistors was damaged
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