Fuse pops when back door is closed

(Topic ID: 226727)

Fuse pops when back door is closed

By pinstyle

69 days ago

Topic Stats

  • 9 posts
  • 7 Pinsiders participating
  • Latest reply 58 days ago by baldtwit
  • No one calls this topic a favorite


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    Door switch (resized).JPG
    Door & switch (resized).JPG

    #1 69 days ago

    I have a Bally Surf Club which plays just fine but pops the 10amp 30v fuse when the back door is closed fully. I found some bare wires in the main harness in the back under a metal strap which had corroded, it eat right through the cloth covering on the wire. I though for sure this was my problem (a problem but not the problem). Looked all over for a little burn mark maybe where something was shorting out but found nothing so far. It seems like the fuse pops as soon as a coin is dropped when the coin divert (?) coil pulls in on the coin door. Only does it when the back door is fully closed. I am thinking there is something just a little too close to something else and I am getting a dead short when this circuit is energized. Does anyone know if there is something to look for in the back which is close to something else that might touch if it loosens, gets bumped, falls out of adjustment etc.?

    #2 69 days ago

    I'd open it up, slide a yardstick or something long and flat across the back, and look for things close to the yard stick. That could be what your door is hitting or pushing into something else.

    LTG : )

    #3 69 days ago

    Don’t close the back door then....

    #4 69 days ago

    Seriously tho, ltg has a great idea. Try that.

    #5 69 days ago

    I don't have a Surf Club but it should have a switch that closes when the door is shut, located on the back door at the top left. Does disabling this switch correct the problem? It isn't necessary for operation of the machine.

    #6 68 days ago

    My "Bikini" machine has a switch near the top right.
    It turns on a light to get a look at all MY money in
    the coin box.
    The door holds the switch OPEN when it's closed.
    I guess you could call it NO.
    It was not working when I got the machine, but I
    thought it would be neat to get it working, like your
    refrigerator light; but in THIS case you KNOW that the
    light goes out when the door is closed

    Door & switch (resized).JPGDoor switch (resized).JPG
    #7 68 days ago

    I used to have a shuffle alley that would do the same thing. It had a hinged back door with wiring loom attached. Over the years the constant flexing of the loom near the door edge caused some wiring insulation to fray. When the door closed a couple bares spots in the wiring would touch. Sounds like what your on to but don't dismiss any wiring deeper in the loom. You may need to inspect a by spreading more of the loom to see if there are any more frayed wires hidden inside.

    #8 68 days ago

    I don't recall there being a switch at the top left but I will take another look.
    LTG, there is some merging of things within the back box with some things mounted on the back door. Nothing sticks out quite that far but like I said they do merge within the cabinet. So I think it is this merging of things or like AlexF says there may be more damage in the loom that I have missed. I did remove all the metal strap since even though there is a coating on them they were still corroded and starting to eat the wire coating. So the harness was repair in two places.

    1 week later
    #9 58 days ago

    the most common things when the back door is closed is:
    - trip relay bank wiring shifting/rubbing against the head
    - twisting of the main harness within the cable clamps like you already found

    try removing the backglass and flipping down the lamp panel. You can then look around the edges of most of the back door and see if any wiring harnesses are hitting the head wood and see if any units are hitting the CU switch wiring.

    also look to see if the CU wiring that should be supported above the metal shelf is drooping due to broken plastic clips. The units on the door bottom need to go into the space below the metal shelf.

    the switch on the back door lock on many games disconnects the meters so they don't do anything when the doors are open (there's a switch on the front door too in addition to the light switch). Don't think surf club has those switches.

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