I did something similar with my Lost World, only I cut a piece of plexi to fit in the "insert coin" window for the switch to mount to.

Anyone have an idea why my lost world boots with 40 credits added and the default high score all of a sudden? It just developed this problem out of the blue. Molex connectors are all new. It is kind of nice that it's essentially free play, but I would like to save the high score. Off board mounted batteries are fresh as well.

If I recall, I think you can set it to 40, although I could be mistaken. I'll check the switches, but I'm not sure the issue is related to that. You can drain the credits playing games, but as soon as you turn it off/on, they reset to 40 and the high score gets wiped out. It's pretty odd.

I'll take a look at that. Thanks

That's interesting about the caps on the bumpers, as mine are clipped as well. Do you recall the value of the caps?

Had an issue crop up out of nowhere with my lost world. The left saucer, right pop bumper and B target switches stopped registering (switches 23, 31, 39). They are all on the same circuit it seems. I traced the wire back to the mpu and have no breaks, confirmed with a MM. All of the molex connectors were replaced in the last year. Any ideas of what to look for?

Yep, solder joints are good

Have an ongoing problem with my lost world. A while back, the B rollover, middle pop bumper and left saucer switches stopped working. In the midst of trying to figure it out, they started working again and i put aside trying to find the problem. Recently, they went back out. These are switches 23, 31 and 39 and are daisy chained together under the playfield. So far, I've reflowed solder on all pin connectors, crimped on new molex connectors and checked for continuity going from the switches to the back box and have found nothing. Any ideas where to look next?

I'll try that and report back

Unsoldered an end of each diode. They all checked out with a mm.

Nope. Zero corrosion, no Cold solder joints that i could see.

With glasses and a glass, i couldn't see any. course, that doesn't mean they're not there. Reflowed the pin connectors all around, so hopefully i can rule them out

Thanks!

Had the same issue. Cleaning up the shaft with a metal file did the trick.

Anyone know off hand what size flipper coil sleeves Lost World uses? Marco doesn't have any listed and i don't have the manual nearby.

Awesome, thanks.

I had issues with my sound board when one of the electrolytic caps went bad. Recapped and all was fine.

I'll be damned. I thought I just had to live with the hum. Worked like a charm.