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Thread: bally replacement boards

  1. #1

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    bally replacement boards

    https://cointaker.com/products/75-84...tern-mpu-board

    I have a Matahari aith intermittent problems - CPU rebooting and game starting over amongst other freezing.

    Are these MPU replacements a simple drop in? For $200 it might be a cheap fix.

    thanks
    George

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    its not $200.. is USD200 plus freight plus gst.. more like 350.

    if you want a drop in MPU you can buy an alltek board locally https://www.pinballspareparts.com.au/ultimate-mpu.html

    or get @Skybeaux to fix yours



    probably well worth reconsidering the assumption that the mpu is the issue as well....
    Last edited by wiredoug; 11th October 2018 at 11:58 AM.

  3. #3

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    Quote Originally Posted by wiredoug View Post
    its not $200.. is USD200 plus freight plus gst.. more like 350.

    if you want a drop in MPU you can buy an alltek board locally https://www.pinballspareparts.com.au/ultimate-mpu.html

    or get @Skybeaux to fix yours





    probably well worth reconsidering the assumption that the mpu is the issue as well....
    Yep, more likely connectors rather than the mpu.

    Best off sending the mpu and driver board to ken for an overhaul. New headers, IC's, caps etc.

  4. #4

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    Check for battery damage on the board too.

  5. #5

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    Quote Originally Posted by lentildude View Post
    https://cointaker.com/products/75-84...tern-mpu-board

    I have a Matahari aith intermittent problems - CPU rebooting and game starting over amongst other freezing.

    Are these MPU replacements a simple drop in? For $200 it might be a cheap fix.

    thanks
    George
    I had the same issue with my board. My board looked in ok condition so I sent it to Ken to fix. He's a straight up guy and will tell you if its worth fixing or not.

  6. #6

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    Make sure the center harness saddle clamp is supporting the weight of the main head wiring harness and isn't just looped through it. Without this simple part doing it's intended job results in the board wiring connectors having to hold the weight of this harness.

    Also check the ground is nice and tight. Seeing as your machine is booting, my money is on one of these issues being your problem however dodgy rom sockets can cause similar problems as well. Something Ken will fix and I'm sure Ken will find other things that greatly increase reliability.

    Money very well spent.

  7. #7

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    thnx for comments. Will look a little deeper before considering a "brain swap.."

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    to answer your question, yes they are a simple drop in.
    you set a dip switch bank to suit your Mata Hari.

    you may also need to upgrade your solenoid driver board if you haven't already.
    without a fast, clean, solid 5VDC supply at power up it will never start the MPU booting.

  9. #9

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    Rich, my rectifier board is terrible. Who in the group sells the rectifier boards? I will need the connector sets too as some coin op 30 years ago soldered wires directly to some of the pins.
    IMG_0147.jpgIMG_0147.jpg

  10. #10

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    Quote Originally Posted by lentildude View Post
    Rich, my rectifier board is terrible. Who in the group sells the rectifier boards? I will need the connector sets too as some coin op 30 years ago soldered wires directly to some of the pins.
    IMG_0147.jpgIMG_0147.jpg
    YUK!!!!. This is so often the case
    @Tangles sells a very nice replacement board here on AA https://www.aussiearcade.com/showthr...gles-Pin-Parts

    If it was me I'd be replacing that board 1st before chasing any other board "problems". They are 99% always shot with hacks and getting very tired. You'll be amazed how much better the game will now work.

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