I replaced a couple of lamp sockets on CBW and now it seems I have a switch matrix problem. When I coin up the game, nothing happens. Then a few seconds later it will register $0.25. When I coin it up additional times it seems to be registering as the start button (the wizard says "Another coin please") and the game won't start. I went into the service menu but could only find adjustments and no tests. How do I get to the switch test in a Gottlieb system 3 machine? The start and flipper buttons register correctly in the adjustments menu.

Dude, really?? I ran this possibility through my mind and thought, "A combined lamp and switch matrix possibly? Lol, that's silly." I just have miswired one of those sockets. There was one I was not sure about that uses three wires attached. It's the one under the left O rollover insert in "POOL." Looks like it jumps to the socket to the left of it using a stapled piece of braided wire. I removed this and installed a replacement jumper wire in its place as the tabs on the new socket are further away. I should have gotten a photo of the wiring before I started but did not. I got the two pairs of wires correct with respect to the diode (blue/orange on diode band side) but I may have tied in the third wire wrong. Can someone with a CBW get a photo of this socket for me?

Thanks. I'll check it out Monday.

I don't see a test option when I press the test button. The only choices I see are press test to enter adjustments menu and press start to restore factory defaults. Went all through the adjustments menu but it just rolls back to the beginning of adjustments.

Tried holding down the test button and it just goes into adjustments. I'm looking at the schematic and the switch drive is connector A9J5 and the return is A9J4. These labels were printed on a sticker that was applied to the connector headers (really?). They are all gone on my game and I see labels like P1, P2, etc. printed on the boards. Which board/connectors do I need to disconnect so I can get into switch test? The constant use of white striped wires throughout the entire backbox certainly isn't helping. My gosh this design is horrible.

Ok I disconnected the second socket I replaced and removed the bulb and I can navigate the menus now. It's the yellow 1 insert above the right flipper. I'm pretty sure the yellow wire goes on the band side of the diode. I reversed this and even tried another diode but the issue is still there, even after removing the diode entirely with the bulb installed. Am I missing something regarding the original sockets?

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We figured it out. Evidently the diode has to be isolated from the other side of the socket and on top of that the lugs do not line up with the diode orientation on the original lamp PCBs. How weird... had to do this with both sockets. Didn't know it was designed this way. I bet the lamp/switch strobes are shared on the same wire and the returns are separated as previously suggested. All working and no more lamp ghosting!

So for anyone looking to replace lamp sockets on their Gottlieb games keep this in mind! It will save you a lot of headache.

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