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Thread: ToM - Trunk Error - A new solution

  1. #1

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    ToM - Trunk Error - A new solution

    Owners of the 1995 Bally - Theatre of Magic (ToM), may know of the problem relating to the Trunk getting “locked out”. This problem has been well documented over the years and indeed a couple of solutions exist as hardware and software modification to alleviate the problem.

    The fundamentals of the problem are a bug in the game’s firmware. This bug will put the trunk into a locked out state if the trunk eddy sensor receives a “hit” whilst the trunk is in motion. Once locked out, the trunk will not be allowed to move until the game is powered off.

    The Fix:
    Tangles’ Pin Parts Smart Eddy board now includes an additional “inhibit” plug. When wired to the DC Motor Control board, the eddy will not register switch hits when the trunk motor is turning.
    The signal connection into the Smart Eddy may come from the original A-16120 or from the Tangles TPP-1029 DC Controller board – which comes with the additional connector.

    I propose this solution for ToM owners who are considering upgrading their eddy sensors to Smart Eddy boards, as the trunk fix can be piggy-backed onto this upgrade with a little additional effort.

    OPTION 1 - KIT OF PARTS FROM TANGLES
    Parts supplied :
    1 x TPP-1023 - Tangles’ Smart Eddy board – with inhibit feature
    1 x TPP-1029 Tangles’ DC Motor Control Board – with inhibit feature
    1 x 3 wire cable ( 0.1” plugs - 560mm long)


    INSTALLATION OPTION 1
    • Install the Smart Eddy Board (replacing the trunk eddy board).
    • Install the Tangles DC Motor Driver board (replacing the original)
    • Install the 3-Wire “inhibit” cable between the Smart Eddy and the DC Motor Board.





    OPTION2 – MODIFY YOUR OWN DC MOTOR BOARD A16120
    This option for experienced repairers only.
    Parts:
    1 x TPP-1023i - Tangles’ Smart Eddy board – with inhibit feature.
    2 x Molex 3 Position Rectangular Receptacle 22-01-3037
    6 x Molex crimp pins 08-50-0032
    3 x 560mm long 22AWG or 24AWG wire.
    1 x Molex 3 Position Header 22-27-2031

    INSTALLATION OPTION 2
    • Install the Smart Eddy Board (replacing the trunk eddy board).
    • Connect the 2 pin Eddy sensor.
    • Connect the 4 pin power/signal connector.
    • Remove the A16120 board.
    • Drill holes for 22-27-2031 Molex header.
    • Install Molex plug. Glue or secure as needed.
    • Wire pin 1 to U2-Pin 5
    • Wire pin 2 to U2-Pin 4 (ground)
    • Wire pin 3 to U1-Pin 5
    • Re-install modified A16120 board.

    • Assemble / crimp 3-wire cable using 08-50-0032 pins and 22-01-3037 shell
    • Install the 3-Wire “inhibit” cable from Smart Eddy to the DC Motor Board.
    • Route the 3-wire cable under the wiring loom to stay clear of trunk opto.

    Details on my site here: http://tanglestech.com/Theatre-of-Ma...-Kit_p_34.html

    ToM-Trunk-Kit-Annotated.jpg

    IMG_6327.jpg


    If modifying you own DC Motor Controller board: these are the connection points:
    Mod-Points-Schematic.png
    Tangles' Pin Parts.

    Pinball Replacement Boards - Designed and Manufactured in Australia
    http://tanglestech.com

  2. #2

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  3. #3

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    Question

    Hey @Tangles,

    If you’re looking for another project, the Twilight Zone Proximity switch is no longer available anywhere. This is switch 26, and often causes issues with TZ’s.

    I’ve had ongoing problems with mine and have searched worldwide. There were two aftermarket versions also made, but neither of these is still in production.

    It’s not an overly complicated design, so should be easy for you.

    Below is a pic of my aftermarket ‘improved design’ one for reference.
    I’d be happy to trial anything that you come up with!

    PS - nice job on the trunk boards. If mine play up I’ll be in touch!
    Attached Images Attached Images

  4. #4

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    Eddy boards for TZ (ramp and trough) are in development. They will be available very soon.
    Tangles' Pin Parts.

    Pinball Replacement Boards - Designed and Manufactured in Australia
    http://tanglestech.com

  5. #5

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    I recently purchased your trunk pcb pre this fix. Is there an mod to utilise your previous pcb or would I have to purchase another smart trunk pcb

    I just has a thought, the sensor can also be utilised for the magna saves is that correct?

  6. #6

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    Quote Originally Posted by pinball god View Post
    I recently purchased your trunk pcb pre this fix. Is there an mod to utilise your previous pcb or would I have to purchase another smart trunk pcb

    I just has a thought, the sensor can also be utilised for the magna saves is that correct?
    The smart eddy board works in all three loacations on ToM.

    If you own original version boards of the Smart Eddy and want to take up this new feature, PM me and I we can work out an upgrade path.
    Tangles' Pin Parts.

    Pinball Replacement Boards - Designed and Manufactured in Australia
    http://tanglestech.com

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