Hey guys,

I have an Escape From the Lost World and want to swap out the left flipper coil for something less powerful. I still have the stock yellow "A 24-570 / 34-3600" and it has way too much power even with the EOS switch adjusted as much as possible. A coil with literally half the power would be adequate since there are no ramps and all targets are in the middle 3rd of the playfield. Which coil number (or sleeve color) should I consider?

Thanks!

My three left flashers went out recently on my Special Force. According to the manual they are all on the "Bright 1" solenoid driver. I believe it is Q15 but my manual copy is so blury I can't tell for sure and cannot find Q15 on the manual mpu board diagram (again because it is so blury). Can someone confirm that it is Q15 (flasher circuit for flasher under left helicopter ramp saucer) and the location of this transistor on the mpu board? I haven't worked on bally in a long time. This is a common TIP102/TIP120, correct? Thanks!

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Thank you!

I replaced Q15 and it's corresponding 1N4004 but that did not fix the problem. All three "Bright 1" flashers are still out. Are these run serial such that if one flasher led bulb is out the entire circuit fails? Anything else I should try?

And not to sound stupid but is there a fuse identification diagram somewhere for these power supply boards? I can't seem to find one in the manual.

I figured it out. Apparently they are in serial and there was a loose connection in one of the Flasher bulbs. Moving the lead in the flasher bulb and reinserting it into the socket fixed the problem.

On a side note I never knew that this machine had a knocker solenoid until I was digging around looking for a solution to this problem I came across it.. Mine never worked. All of the solenoid circuits seem to work but I've never heard the knocker activate and never saw a setting to disable it in the adjustments. I checked the fuse for it and the ceramic resistor under the Playfield and they both check out fine.

I will check and report back. Thank you so much for the help.

Well apparently the knocker coil works. I can activate it in the self test mode but I don't think I've ever heard it knock during a game. I assume the knocker events are the same for all 6803 games (special, high score, extra ball)? I didn't see any adjustment setting to enable/disable the knocker. Hmmm.