I’m having a problem with Special Force where several targets are reporting closed in test mode, when I know in fact they are open. I’m pretty certain it’s a playfield issue, because the problem resolves when I unplug the switch connector from the board and reports all switches open (normal state); does this make sense? Any ideas what could cause several switches to go out like this other that a short on on the playfield? I’ve looked almost everywhere on the board for issues; but haven’t found much. Ideas would he appreciated. Thanks! Looking for the schematics now.

I actually thought it might be the keypad too, so I did unplug it and still had the same switch issue.

I agree I think it’s likely a short to ground as it was a working prior to replacing bulbs.

Exactly or I would assume it was a chip. At this point I’m definitely thinking I shorted something. I’ll report back soon. Doing Eight Ball Deluxe 1984 right now.

I still haven’t tracked this one down on the playfield.

That first video shows. The closed switches. Don’t seem to be in the matrix. Can’t find a good schematic still.

Rocket K
Rocket E (?)
Left sling
Outhole right
Outhole middle
Outhole left
Bomb B
Load Bombs

Inline DT Bot
Rebound

Here’s where’s I’m at... any ideas appreciated.

Tracing wires tomorrow. Ugh. ;p

Any ideas? I’m still stumped.

After some time racking my brain and going over wiring I was finally able to locate one of the issues. Somehow one of the grounding straps in the coin door was detached and machine contact with the credit button and shorting it, which was ostensibly causing the left slingshot to fire randomly.

So now that I have that fixed and grounded, I still have one issue remaining. Both the K and E targets are closed on the switch test; sometimes they randomly open too and everything is fine which is telling me a flashing bulb or something is grounding to those switches perhaps. I can’t seem to find anything obvious on the playfield but there are two banks of lights out, which should be an indicator, but I’m still not seeing it. Ugh!

Disregard above post. Still doing the same thing.

I’ll try that now. Thanks man. I really appreciate your help.

So I turned it on again today and the one amp playfield fuse was now blown. I put a fuse breaker on it and turned on and it immediately pulls the left sling and blows my fuse breaker.

The interesting thing is I removed the wires from the left sling switch, yet it still pulled the coils, which led me to believe it’s a board issue??? If I pull plug J6 the sling will not pull and the fuse will not blow.

This is a newer issue than what I’ve been originally tracking. When I booted it today all the lights seemed to work, whereas before many were not working, prior to removing the left sling shot switch wires, so this is rather confusing.