when the ball lands in either pf eject holes the back box lights flash off then back on twice during the bonus then eject cycle.

First, immediately when the hole switch is closed, then again part way through the cycle. Traced it to the make break switch on the eject relay. See switch far right in pic. When the normally closed side of the switch is opened without triggering the relay, back box lights go out. If I jumper the center leaf and normally closed leaf, the lights don’t flash off then on at all.

Can’t find any reference in the schematic to the eject relay turning any lights on or off.

So, is this normal? Or do I have a problem somewhere?

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Both led and standard. And the turn completely off.

Nothing else changes. But when anything adds to the bonus, it also flashes the lights in back box.

Also, 10 and 100 point relay have slight flicker. 1000 point relay creates the complete on off flicker.

Also, Not all back box lights are flashing. Only the illumination for the back glass and the elimination for the score reels. And I’m probably being blind but I can’t find the circuit for those lights on the schematic.

Thanks for the ideas. Done for tonight. And won’t be able to get back to it for a couple days. Will post progress when I can. Thanks again. Btw this one had lots of problems. Just couldn’t track down this hopefully last one.

Got back to it tonight. When engaged manually, 10, 100, and 1,000 relays all flashed back box lights off. After much tracing found a n/o switch on the Ball index relay that was always closed. Far left in pic. Opened it to operate properly. And back box lights went out completely. However when the first 10, 100, or 1,000 points were scored. Ball index coil locked on, and lights no longer flicker on any points scored.

However, pretty sure backbox lights shouldn’t be off until points scored. But I can’t find anywhere in the schematic that shows what should power these lights at any time. Ideas?

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Thank you all, will look at it this weekend. And get back w results. Definitely an interesting problem. On the good side, was 8th in league tonight. Lol

Thank you all, and Mark G, as usual right on the money. Took some tracing, but yellow wire going through the jones plug in the back box wasn't making contact. Thought I had cleaned all the jones plugs on this game, but due to extended family situations, started working on this last April, with having to take months off in between sessions working on it. Somehow, missed cleaning the top jones plug of the two larger ones in the back box.

Now plug all clean and shiny and everything making good contact. Game looks to be playing perfectly so far but have only played about 6 test games since cleaning plug.

Thanks again for all the help.