After my last shot at fixing my bonus count-down in my 1976 Royal Flush, after cleaning and adjusting the "I" relay, everything scores as it should now, there are definite pulses at the appropriate bonus point but I've noticed that the yellow arrows indicating the bonus position are not always lit. From the schematics I've found where all this occurs but my schematic reading/understanding is still at novice level. Can someone enlighten me on where to look and adjust something so the lights work properly. I've checked all the bulbs and they are all good. The lights will sometimes light and sometimes not. Seems like some contact point is wonky. Here's the portion of the schematics referring to the bonus lights. Thanks for any advice.........

RFschematicsIrelay (resized).jpg

Thanks Mark for the concise explanation........will have a look at that right now.

Hi Rolf: Thanks for the link........yes, I see all those lugs and they all seem to be in order. The wiper doesn't seem to stall when it's doing the bonus count. Count seems ok but the lights don't all come on as they should. I will try and post a video of what is happening. Before, the arrows were lighting but going through the steps way too fast. Now the pulses seem correct but no lights but bonus count works.

Thanks for the to-do list Rolf! So I jumpered all the relevant wires on the lugs of the "I" relay to the wh-blk on the E relay and all the bonus arrow lights are working. I guess this tells me that the bulbs and connections are all good. Still getting sporadic lights when the bonus is scoring though.........

Hi Mark: I did have the I relay out, cleaned both bakelite boards (nice and shiny), teflon gel on them, carefully cleaned the plastic gear cogs with alcohol, made sure it was stepping nicely, and cleaned the two switches sandwiched in-between the bakelite boards. Here's what's happening when I down all the targets on ball one of a 3-ball game.

1. All the bonus lights come on and the targets score the correct amount.
2. Drain the ball
3. Bonus count starts (should be 15 000 added to the score)
4. 4000 of the 15000 score, 1000 (first bonus level) scores but no yellow arrow; nothing on the 2000 bonus level; 3000 bonus level scores with the arrow
lit; nothing on the 4000 bonus level (no light); and nothing on the 5000 bonus level and again no light.
5. Ball gets ejected into shooter lane. Ball 2
6. Knock down all targets. Double-bonus is lit. Should add 30 000 to score.
7. 1000 bonus level scores with arrow light working. 2000 bonus level scores with arrow light not lit; 3000 bonus level scores but no light; 4000 bonus
level scores with arrow light flickering. 5000 bonus level scores 1000 with no arrow light working. 9000 short of bonus that should have been added to
score.
8 Ball 3. Knock down all targets. 30 000 should be added to score
9. 1000 bonus level scores with bonus arrow lit; 2000 bonus level scores but no arrow lit; 3000 bonus level scores with arrow lit; 4000 bonus level scores
with arrow lit; 5000 bonus level scores with no arrow lit.

Not sure what all that accomplishes but it kind of works and kind of not works!! (isn't that the way with these EM's)

Also, just to clarify, the above procedure is sporadic. I just went through a 3-ball game (simulated) and the sequence of scoring is different from what I wrote in the above. Strange how the Royal Flush was working fine a week ago, and then just started doing this. EM gremlins??

You're probably right......I meant they kind of work for novices like me!! Yes, the scoring was working and now, not so much. I'll check the I relay again; maybe I'll post some pics or video just to show how it's looking. Could be something I'm not seeing. I had a look at all the relays that sit in that bank under the playfield and notice that the J relay when manually engaged, tends to miss or the cog-wheel kind of misses. This is the double-bonus relay from what I gather from the schematic.

Here's a short video of the "I" relay when I actuate it manually..........does it look ok to you?

I'll take a video in-game tomorrow. Thanks for any advice/help!!