On my High Speed project, the diverter gate coil is energized and locked on as soon as the machine is turned on, and the F2 fuse on the power supply blows quickly.

I replaced the TIP102 at Q15, but the problem continues. I also replaced the coil with a new one since the old one fried.

I am wondering if I should look elsewhere and not on the board because all of the boards are from a different machine, and it seems very coincidental that the problem solenoid would be the same.

I discovered that one of the tip102's that I installed was bad. Problem solved with new tip102.