(Topic ID: 265419)

1974 Gottlieb Big Brave "Bonus Stuck" Issue

By Jamesholm1

3 years ago



Topic Stats

  • 7 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by DaMoib
  • Topic is favorited by 1 Pinsider

You

Linked Games

No games have been linked to this topic.

    Topic Gallery

    View topic image gallery

    MissingUpperContact (resized).jpg
    image0 (resized).jpg
    image2 (resized).jpeg
    image1 (resized).jpeg
    DrelayRelease (resized).png
    bonusunitswitch (resized).jpeg
    image4 (resized).jpeg
    image5 (resized).jpeg
    image3 (resized).jpeg
    image1 (resized).jpeg
    image0 (resized).jpeg
    image2 (resized).jpeg

    You're currently viewing posts by Pinsider DaMoib.
    Click here to go back to viewing the entire thread.

    #2 3 years ago

    Check the operation of your "On Add Bonus Unit" switch (indicated in the picture). As a bonus is added, this switch should open and release the hold on the "A" relay.

    If you open the switch during the bonus runaway, does it stop?

    bonusunitswitch (resized).jpegbonusunitswitch (resized).jpeg
    #3 3 years ago

    A 2B motor switch releases the hold on the "D" relay, check that switch out, too.

    Does the machine have the same bonus lock/runaway behavior if you simply hold down the "I" rollover switch?

    Another issue that could cause the behavior is a drop target, rollover or rollover button switch that is gapped too closely.

    If your bonus lights are operating correctly, I don't think the extra wire on the disk of the bonus unit is an issue.

    DrelayRelease (resized).pngDrelayRelease (resized).png
    #6 3 years ago

    That's 1C, move clockwise one more switch stack (against the side of the cabinet) and down one level for the 2B switch. Match the wire colors to identify the correct switch.

    https://pinwiki.com/wiki/index.php?title=EM_Repair#Gottlieb.C2.AE_Score_Motor

    #7 3 years ago

    It looks like the upper blade of your "On Add Bonus Unit" switch is missing a contact and definitely needs to be replaced. That might cause scoring problems when you activate a lit star rollover button (100 points plus bonus), but I don't think it can cause the bonus stuck problem.

    MissingUpperContact (resized).jpgMissingUpperContact (resized).jpg

    You're currently viewing posts by Pinsider DaMoib.
    Click here to go back to viewing the entire thread.

    Reply

    Wanna join the discussion? Please sign in to reply to this topic.

    Hey there! Welcome to Pinside!

    Donate to Pinside

    Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


    This page was printed from https://pinside.com/pinball/forum/topic/1974-gottlieb-big-brave-bonus-stuck-issue?tu=DaMoib and we tried optimising it for printing. Some page elements may have been deliberately hidden.

    Scan the QR code on the left to jump to the URL this document was printed from.