(Topic ID: 243895)

Gottlieb


By Impact93

54 days ago



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  • 12 posts
  • 5 Pinsiders participating
  • Latest reply 53 days ago by Impact93
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    #1 54 days ago

    Hi everyone

    Pinball newb here with little experience working on these but trying to learn. I definitely do better with hands on than schematics but I try.

    From unplugged state:

    1.plug in (nothing)

    2.add quarter

    -playfield and head unit lights turn on
    -game adds credits correctly
    -motor turns
    -ball kicks out ready to plunge


    All score reels fail to reset •

    Playfield is active and all score reels will accumulate points correctly except for the ones reel.

    The ones reel will mostly spark and make a buzzing sound when bumpers or targets are hit but will %90 of the time not advance. Ones reel can be advanced manually with finger and moves easily. Tapping ones relay will also add points to ones reel but bright sparks occur when tapped. Sometimes the relay holds shut and blows the fuse both when manually tapping or via playfield

    Ones reel will NOT advance tens reel when rolled past 9.

    I hope i explained that correctly. I guess the thing to do is to get the reset working properly.

    Thanks for reading.

    #2 54 days ago

    Ok, I just noticed something else

    1. The previous owner has been soldering connections on the score units specifically on the end of stroke connectors

    2. The tens reel end of stroke switch is broken off.

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    #3 54 days ago

    Repair the switch - one leaf is indeed broken. Clean the contacts for the score reels and the relays that control the chimes - I don't remember the designation, but the relays are in the head.

    Since the previous owner has been playing with the score reels, that would be a good place to start looking for issues. Let us know.

    #4 54 days ago

    Forgot to mention how to clean the contacts - drag a business card through the closed contacts to remove tarnish. YOU should not need anything heavier (Sandpaper is a definite no no). Verify the screws that hold the switches are tight - closest to the contact first, then the back one.

    If the switches are riveted together, you want to make sure that both rivets are intact and sandwiching the pieces.

    You are going to want a schematic - Steve at Pinball Resource sells them. Gottlieb schematics are generally not available on line, and they actively keep them from showing up on line.

    #5 54 days ago

    Thanks Bill

    Would a broken EOS switch effect the reset? I actually have the original schematics that came with this machine. They are old but still legible!

    Guess I’ll order that EOS now. I kinda wonder if I should just order some other parts while I’m at it just so I don’t have to make multiple orders.

    #6 54 days ago

    The eos switch has nothing to do with the reset of the score reels. A rubber ring kit, #47 bulbs, and new line cord are popular items.
    What bill c was saying about cleaning contacts is for solid state games that have gold plated contacts. For em machines I use a ignition points file.

    #7 54 days ago

    Right. So where do I look to fix the reset?

    Thanks

    #8 54 days ago

    When you say the reels won’t reset, do you mean they just keep spinning? Or they stop spinning when you start a game, but they’re not on zero?

    It sounds like you’re able to start a “game” of sorts, and get some scoring to happen. Are the reels continually spinning while this is going on? Or just not at zero when you begin?

    #9 54 days ago

    Here's a site I refer to often and one that you as a newb should certainly bookmark: http://www.pinrepair.com/em/index1

    Read down to Score Reels in 2.

    #10 54 days ago
    Quoted from goldenboy232:

    When you say the reels won’t reset, do you mean they just keep spinning? Or they stop spinning when you start a game,

    They don’t spin at all when you start the game. It doesn’t even sound like they are trying to reset. So if the score reads 2222 when you put a quarter in it just stays at 2222. From that point you can play a game and add to that score.

    #11 54 days ago
    Quoted from currieddog:

    Here's a site I refer to often and one that you as a newb should certainly bookmark: http://www.pinrepair.com/em/index1
    Read down to Score Reels in 2.

    Thanks for the link!

    #12 53 days ago

    After reading the above link i cleaned some connectors, repaired a leaf switch on a score reel and soldered some suspicious wires. I can now get the machine to reset correctly and the field is ready for play! Thanks!!

    •Reset issue fixed!•

    Remaining issues

    1.When the ball in play drains the credits won’t go down. The credits reel DOES act correctly when adding a quarter and starting a game.

    2.Ones reel will not advance. Just bright sparks from the relay, all 4 lead switches flash brightly. It’s not the reel itself as I have removed the number reel and moving parts from the equation. The coil shakes but will not fire properly even with nothing in its way. If I remove the tension spring the coil will fire. Video below

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