Okay I am going through and cleaning and adjusting the BL sling switches. I understand that these coils are not fired by the driver board, but I am looking for an explanation of what the one single switch does on the bottom, and how its supposed to be adjusted. Not talking about the two triggering switches. I am referring to the one that appears to be used like a EOS switch.

The sling coil seems to work the same regardless of the state of this mystery switch. It also appears that it may have been installed or adjusted incorrectly by a previous own. It is servery bent in the down direction.

Thanks

Well duh. Thats makes total sense. LOL

Still an issue with one sling with respect to power, but I dont think its switches. The right sling just has no power behind it. It gives a very minor kick, but nothing like it should the Left sling has the kick it should.

The right sling will give a very weak "jack hammer" if you hold a switch closed. But not like the "jack hammer" on the left sling. I have cleaned the switches with a flexstone and they even appear to look good. So I dont think its the switches or switch gap, and nothing is bound up either.

I guess I am at a slight loss since these sling coils dont go through the driver board.
Any ideas?

Thanks again

The plastic is removed. And I can confidently say there is no bind of mechanisms. Coil and sleeve are brand new. I do now see where the driver board is indeed firing the sling coils. I am also seeing 31V DC being provided to both coils. I assume thats good since the left coil works as it should.

What about the small cap on the one sling switch? What role does it play? BTW it is wired up correctly. Might it be worn?

Okay the scoring switch for that sling was installed wrong. It was producing a lot of mechanical resistance therefore robbing the sling of power. Thats now fixed.

Also the sling spring was weak and needed a stretching till I can get a pair of new ones. This was effecting the operation of the scoring sensor. So I think I am now starting to understand how this mech works. But as "luck" would have it, I have a new issue.

That right sling coil is now energized all of the time during play or in diag mode. So I was figuring I had the shorted Q2 transistor that powers that coil. So I checked it for shorts, and there are no shorts on it. I have checked the triggering switches for the sling, and they are not stuck closed. I am thinking something failed from the extensive troubleshooting I was doing on the coil.

So if Q2 is not shorted, and the triggering switches are not shorted either. What else would be causing the right sling coil to be stuck powered on?

Thanks for the help guys.

Checking the coil diode now.

Coil diode is good. Coil remains powered all of the time.

So it appears that something is causing pin7 on 2J12 to go straight to ground, all the time during game play, or when in the diag mode. BTW I tested this directly at the board, so the PF is not causing this. Thats why that sling is remaining powered at all times.

Just checked Q2, and it is not shorted. WTH? I would normally expect to see a transistor like this shorted out for this condition.