Rochester Hills, MI
Hey, All...
I just picked up a 1995 Gottlieb Big Hurt machine and it's an absolute blast. It's a blast to play even though it didn't come with a coil in the center ramp lifter or on the right Kicker/slingshot.
The fact that those coils were pulled made me think that the old owner was lazy and there may have been an issue beyond just a 'bad' coil.
So, I purchased a new coil for the right slingshot (part #5195) and put it in. The coil locked on immediately, so I shut the machine off.
In Doing some research, and giving myself a crash course in schematics, I learned that transistor Q4 on the driver board controlled the right Kicker coil. I tested that specific transistor, and it was blown. So, I successfully replaced that old 12n10L with a IRL540, and tried the test again. (ironically, I also replaced Q12 which was blown - and this happened to be the transistor that controls the center ramp lifter assembly.... But I'm not focusing on that coil at the moment)
The coil immediately locked. I shut the machine off. Thankfully, the new transistor and the coil, as well as the coil diode all still test OK, so nothing has blown again, thankfully....
Are there any other common things to check in this case? I also have lamp #10 that always stays on, so I'm not sure if that is on the lamp matrix in such a position that it's messing with the switch matrix and impacting the tight Kicker....
I just realized this.... even though nothing seems strange during gameplay with switches, when I run a Switch test, there are several switches that show as being closed. Perhaps I should check every one of those and check for shorts and ground issues before I start diagnosing the coil lock, as they may be related.....right?
Thanks a ton in advance, and I hope others can use this post in the future - I know I would, lol.
Thanks again,
Matt!
