(Topic ID: 264010)

O relay

By wesley

2 years ago


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  • 17 posts
  • 5 Pinsiders participating
  • Latest reply 2 years ago by rolf_martin_062
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    #1 2 years ago

    Sorry to pester. Got the score reels working. Can anyone tell me why I'm not getting power to the O relay to eject the ball?

    #2 2 years ago

    What game? Do you have the schematic?

    #3 2 years ago

    Yes. But I find I'm not very good at it. Gottlieb 1976 Volley.

    #4 2 years ago

    Find the line that has the coil for the “O” relay. On the left side of the coil is a thick line. There may or may not be switches between the coil and the vertical line. Same thing to the right of the coil toward the thick vertical line. Those two vertical lines are the voltages. Those switches have to be closed for power to go thru the coil to the other vertical line. When all those switches are closed at the same time, the O relay should energize.

    Any letters above a switch in that line indicates what relay that particular switch is associated with.

    At that point, you need to check those switches to see if they are operating properly. You can check with power off by using a multimeter and manually operating that relay to verify that particular set of contacts is opening and closing.

    If you still need help, post a snippet of that line of the schematic.

    2 weeks later
    #5 2 years ago

    Having a snag here Billc479

    #6 2 years ago

    Wesley........... If you're talking about not getting anything after the score reels reset, and there's a ball sitting in the outhole, the outhole switch making contact:

    Check the ball-count unit in the head. There will be free-standing switches in the back, behind the board with the contacts on it. There are 2 coils on this unit, (step-up and reset coils). Check that the reset coil got energized upon start up, and that the leaf switch contacts were reset. THEN, check the free-standing switches on the back of the contact board making sure they are cleaned and adjusted properly. One of those switches I believe, brings the entire playfield switches to life, making the outhole switch work which will energize the O relay and kick the ball to the shooter lane. Good luck!

    #7 2 years ago

    Thanks Ron. Remember I couldn't get the score reels to zero. I adjusted the AX relay switches, and got the score reels to set properly. Then, the ball wouldn't eject. So you think it could be the AX relay?

    #8 2 years ago

    Did you put the ball in the trough and manually close the o relay?

    #9 2 years ago

    Yes. I did. Nothing.

    #10 2 years ago

    Keep thinking. Like you and me there's one switch off.

    #11 2 years ago

    You should check the interlock relay in the back box, this is the one that has 2 coils on it, on start up one side engages and that the other locks in, it's also important it's gaped properly.

    #12 2 years ago

    Thanks. I'll take a look.

    #13 2 years ago

    Here are some pics of the schematics

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    #14 2 years ago
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    #15 2 years ago

    Did you get them?

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    #16 2 years ago

    This is the start up sequence, you need to go down the check list.
    My thoughts are the AX relay, it's very important to be gapped correctly.

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    #17 2 years ago

    Hi wesley
    I read You have the problem "after starting a new game then the O-Ball-Return-Relay does not activate". See the JPG - question - when the fault happens / shows up: CAN You actuate the Flipper-Bats ? If "Yes" - wear rubber gloves, do NOT touch metal - use an wooden stick - manually actuate the O-Relay-Armature (You simulate: Relay pulls-in) - then let go the wooden stick - big question: Does the O-Relay keeps on pulling (for a while) - stays pulling ?

    See the JPG - "my red line" is "wiring to make the O-Relay to pull-in" and "my blue line" is "wiring to keep pulling / stay pulling. Depending on Your answer (to Does the O-Relay keeps on pulling (for a while) - stays pulling ?) there is mor or less wiring / switches to check. Greetings Rolf

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