Hello All - picked up a Neptune in good shape, and I'm working on cleaning it up and getting it working well again. It starts up and plays, but has a few things not 100%, so I want to sort them out.

First issue I'm looking at are the rollovers. When triggering any of the "card" rollovers (J, Q, K, etc) or stand-up targets, the appropriate relay on the underside of the playfield will pull in as it should and stay that way. No Scoring occurs though, and the chimes don't go off either. This is true of all the associated relays on that relay bank. All I hear is the buzz of the relay changing states as it should, and nothing else.

I found some other threads on Neptune, and one of them mentioned a chime issue that was related to the resistor on the Q relay. Could that be related perhaps? Thread is here:
https://pinside.com/pinball/forum/topic/neptune-chimes-not-working-all-the-time#post-1888242

Watching the video they included, it was somewhat similar to my problem, but mine doesn't have a scoring motor action, just the "buzz" of the associated relay triggering and nothing else.

Thank you in advance for any advice/assistance!

Not yet, ordering soon though, if I can't find a friend with one.

I'll go take a look and report back!

It turns out the Series relay is the "Q" relay, mentioned in my first post. Sadly, it does not pull in at all when the rollovers are triggered. I manually pushed the armature in, and the game scored the appropriate points and made the chime go off.

Assuming you're correct and the Q (Series) relay should pull in when the rollover and stand-up switches are closed, I need to try and figure out why that's not happening. Anyone with the schematic handy able to give me an idea of the section regarding the "Q" (Series) relay and rollover/stand-up switches?

Everything looks original (and in really nice shape) on the internals, but I'll double-check the coil number.

Following up with this question: it's the correct, original coil A-9746

Everything seems nice and tight, thank you for the suggestion though!

I just jumpered across where the resistor on the "Q" (Series) relay is (per another thread I was reading) and if I held the rollovers down briefly, it actually caused the Q relay to pull and scoring/chimes to work. Same with the stand-up targets. I'm guessing this means that resistor is bad, and not doing it's job? I'm unfamiliar with a resistor being mixed in with relays like that, but based on what I'm reading, it seems likely that's the issue.

Can anyone confirm?

Yep, I have a meter. Not sure of the value since I don't have the schematic yet. Going by pics from another post, the resistor is labeled 10ohm, 10%, 10W. I assume to properly test it, I need to desolder. Sidenote: with the jumper there, and after lots of switch testing, I ended up popping one of the 12V fuses. So I need to be more careful.

You sir, are a kind soul. I'll shoot you a message. Thank you!

I pulled the old resistor in anticipation of the one being sent and bad news... it tests at 10.2ohms. Seems ok. I'll still replace just in case, but now what, if that's not it? Thoughts?

Excellent, thank you sir! I'll let you know how it goes. Working on cleaning up the steppers now. The one that controls the "Wow" add a ball feature is slow moving. Overall the inside of the machine (head and body) are in amazingly clean condition. So much of it looks shiny and almost new, I'm impressed.

I installed the new resistor (thank you leckmeck !), but sadly no change. Rollovers and stand-up targets still not scoring or triggering the chimes.

I double-checked, it's the correct coil it seems.

Q pulls in when I jumper over the resistor, and the scoring and such seems to work when I do. However, after a a few minutes of this, one of the 12A fuses blew, so I'm not sure what's going on there.

All - just wanted to report in since it's been a while. I moved houses, so everything has been packed up for a bit. I hope to get some space and setup in the near future, at which time I'll be digging right back into this project. I have schematics in hand now, so that will help hopefully. Before taking it apart, I had cleaned some additional switches and such, and somehow made things worse (it powers on to Tilt). I only messed with a few things, so hopefully easy to track down and get back to work on the rollover / Q - Series relay issue.