I've a pinball machine that keeps blowing the transistor for the flipper coil. The flipper coil has a diode across the lugs. This tested good but I replaced it with a new one anyway. Still blows transistor. I've buzzed out the lines from all three legs of the transistor and I am not finding any shorts and signals go to where they should. I know its not in the coil as I've connected the side that is not blowing to the one that is blowing and the flipper works fine like this. I feel the issue is somewhere on the board because I have blown the transistor with the the coil out of circuit. The line going to the gate does have a filtering cap between the gate leg and the resistor coming from the signal. Could this cap be causing a ground short if it is failing and cause the transistor to short? The transistor in question is Q15 and has been replaced with an IRL540N due to having a higher amp capabilities than the original. Cap in question is C248 and is 0.01uF. C256 is a blank pad. There is no cap on the board here.