I'm working on a Strike Zone with a friend of mine and we are pulling our hair out. There is something blowing the 15A fuse. We are pretty sure it's something on the playfield, but could easily be wrong. I've gone over and over it and can't find the culprit. I'm hoping someone here can give some ideas. Here is what is happening.
1. If the Tilt relay is NOT tripped, it will blow the fuse immediately when flipping the power switch. If the Tilt relay is tripped, the machine will power on with GI lights and the Lock relay will hold.
2. When the start button is pressed, the machine will start the reset sequence. The score reels will reset and we get to the point where the reset relay drops out, there is then a pause, then the fuse blows. That pause is where I would assume that the outhole relay should pull in, but it doesn't. The outhole relay doesn't move at all during the sequence even though the coil checks out (I did desolder it and check it).
I've gone over both sides of the playfield in detail. I can't find any switch issues or solder drips that could be shorting something.
I'm sure this is a little vague, but maybe there is a clue here to someone? The machine is at my friends house, so will be a delay in answering questions that require looking at the machine. Thanks in advance.