This is a pretty new machine and restored beautifully. I was playing and the ball got stuck somewhere and the game went a little haywire for a bit. I turned off the machine and a big red light came on in the top right corner. The game will turn on but won't launch and just searches for balls constantly but they're in the thing next to the launcher. Any idea what went wrong?

Edit: so it seems the machine can't locate any balls or launch from anywhere other than the moving launchers. It got to Borg mode and wouldn't launch the multiball. I got the balls on the play field manually since the first launcher doesn't seem to be working. The test report says the spinner f7 is a problem but everything else seems okay.

All the balls are there. I'm very new to this so sorry if I ask very stupid questions. I reset factory settings and the problem persists. I can get to the switch test but how do I actually do the test? What do you mean Opto? The cpu looks fine to me.

Okay, so I've managed to find all the balls but I think it has something to do with the ball trough.

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So I'm going to try and test the trough but I have found something troubling. I managed to do the solenoid test and the following aren't making any noise during the test which means they're messed up? The knocker, left sling, right sling, left jet, right jet, bottom jet, trough top divertor and Borg kicker don't make any noise during the solenoid test. The other tests seem to be running fine.

Under l l.lock sw2 is open in the switch test. Is it supposed to be? The coils 7-16 with the exception of 8 aren't working even with that white button pressed. A blown fuse. Looking for it.

Which Opto? Again new to this so sorry if this is a stupid question. Here's the fuse. Looks blown. Where can I get a new one? Should it just pop out?

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Awesome, thanks guys. About to head to the store. So in regards to optos. The manual has this diagram. Does that mean the under l.lock sw2 should be closed?

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Thanks guys! Replaced the fuse now everything is back to normal. The under l lock sw2 is closed again as well which means it's not a problem? I can't believe it. My first repair. Really couldn't have done it without you. I get so stressed when the machines mess up.

Okay, one more thing. After I restarted the game, there was a weird smell. I double checked the fuse and it was fine. Then checked the bottom of the playing field and found this. im guessing this is burned out and prob has something to do with the Opto you were talking about? The smell seems to be coming from some oilish substance around the thing. Also, is this just black because it's black or burned def not the same color as the others. Where would I order a replacement part for this? What would the part number be?

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So you think the burning is coming from that wire?

Is this the Board you were talking about in the last post? Any idea about the level of diffficulty of fixing this?
Things I would need to replace would be the coil, the transistor and?

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I'll get the part, a meter reader and then go from there! Will update as I progress.

What could have caused this problem? Isn't there an underlying issue typically?