simka
New member
Hi can someone tell me how to check solenoids and diodes? I have a Black Knight and replaced the mpu/driver boards. Everything was working except the solenoid for the upper right drop targets. When I got the machine this coil was fried black, I replaced it to no avail. One day I jumped a wire from the upper left drop target solenoid to the one which wasn't working. That was a mistake, fried something on the driver board. I've sent the board back for repair. I suspect the coil which isn't working may be a wire problem. I should check the diode on the coil I used for "jumping".
Simka
Simka