(Topic ID: 210653)

Williams system 6 no coils work


By Michaelxwhite

1 year ago



Topic Stats

  • 10 posts
  • 4 Pinsiders participating
  • Latest reply 1 year ago by Michaelxwhite
  • Topic is favorited by 1 Pinsider

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    #1 1 year ago

    Hello, I have a time warp and the darn thing will go into attract, take credits, but when I go to start a game no coils work and the background sound goes away. All switches will register points correctly. None of the coils work. It's as if none of them are getting power. I purchased a rebuilt driver from a pinside member here a few months back and just got a rebuilt mpu that passes all of the led flash tests. Any help is greatly appreciated. And yes, the 40 pin has been replaced and redone on both Mpu and driver. Anywhere I should be checking first BECIDES FUSES, as that has already been done.

    #2 1 year ago

    Do you have voltage at the coils?

    #3 1 year ago

    And the very basic but stupid question: Are your plugs all where they should be?

    #4 1 year ago

    All plugs are where they should be. No voltage at coils.

    #5 1 year ago

    Voltage at Power supply board 3J3 pins 6-8? At F2? At orange wire on bridge rectifier below the power supply?

    #6 1 year ago
    Quoted from zacaj:

    Voltage at Power supply board 3J3 pins 6-8? At F2? At orange wire on bridge rectifier below the power supply?

    I will check on Sunday, should be good, it's a brand new alltek power supply. But, you never know. Since it's all coils except flippers it can only be a couple things: connections, or main power supply. I don't think it's mpu related, as it passed the led flash tests.

    #7 1 year ago
    Quoted from Michaelxwhite:

    I will check on Sunday, should be good, it's a brand new alltek power supply. But, you never know. Since it's all coils except flippers it can only be a couple things: connections, or main power supply. I don't think it's mpu related, as it passed the led flash tests.

    Wait, flippers work? I'd thought it was all the coils. Flippers are on a different fuse though, and go through separate pins on the connectors of the PSU.

    #8 1 year ago

    Is the 2.5 amp fuse on the power supply board blowing?

    Sorry, I just saw where you said you checked the fuses. Yes, check to see that you are getting power for the coils from the power supply.

    #9 1 year ago

    Update: it was the gulf pinball power supply I purchased off the bay. J3 was getting no power; 10 amp fuse good, but no power going through fuse. Brand New power supply with an issue. I messaged the seller on eBay. We'll see what he says. Put in the original power supply and game functions perfectly.

    #10 1 year ago
    Quoted from StratDoc:

    Is the 2.5 amp fuse on the power supply board blowing?
    Sorry, I just saw where you said you checked the fuses. Yes, check to see that you are getting power for the coils from the power supply.

    Talked to eBay seller and he noted that pin 9 on j3 is not powered on his gulf pinball power supply board for williams system 3-6 and I will have to run a jumper from either pin 3 or 6 on j3 to solve the problem. System 7-11 do not utilize power from pin 9 on j3 apparently.

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