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(Topic ID: 274776)

Troubleshooting early Bally/Stern solenoid driver board


By shado01

74 days ago



Topic Stats

  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 52 days ago by pb456
  • Topic is favorited by 2 Pinsiders

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    B3362EB1-5661-41CA-A341-134420101B6C (resized).jpeg

    #1 74 days ago

    Restoring a Stern Big Game. The game was completely dead. I put in a new rectifier board and it's generating all the proper voltages. I then went to the solenoid driver board. When I applied power I only get the proper high voltages at TP 2 and TP 4. No 5v or 12v at any of the other test points. I replaced the capacitors on the solenoid driver and did the suggested grounding modification on the solenoid driver to include running a trace from TP1 to TP3. Still no voltages other than proper high voltage readings. What should I try next, if anything, before rewiring J3 on the solenoid driver board? How can I check that the proper voltages are getting to the solenoid driver board?

    #2 74 days ago

    If you're not getting 12V at TP5, then voltage isn't getting to the board from J3-12. The 5V at TP1 is generated from that, so you won't see anything without it.

    #3 74 days ago

    OK thanks, I'll check the connector.

    #4 74 days ago

    Horning in a bit - can someone shoot me a pic of J3 (of the solenoid driver board) with wire colors? Sure would be easier than trying to trace each wire down (buddy repinned improperly)....

    #5 73 days ago
    Quoted from pb456:

    Horning in a bit - can someone shoot me a pic of J3 (of the solenoid driver board) with wire colors? Sure would be easier than trying to trace each wire down (buddy repinned improperly)....

    https://pinside.com/pinball/forum/topic/stern-flight-2k#post-5787021

    #6 73 days ago

    Looks to me like that connector is to the rectifier board, not the solenoid/driver board AS-2518-16, J3. I'll keep looking, but thank you!

    #7 73 days ago

    From my F2K

    B3362EB1-5661-41CA-A341-134420101B6C (resized).jpeg
    #8 73 days ago
    Quoted from Completist:

    From my F2K
    [quoted image]

    That's the stuff! Thank you.

    #9 68 days ago

    OK, back to the original question. I replaced J3 AND put in a new Alltrek solenoid driver board and I still don't get any 5v or 12v on the solenoid driver board. Again my rectifier board is new, it puts out all the correct voltages and I replaced ALL the rectifier connectors. The Alltek pamphlet that came with the solenoid driver board says that this problem (no 5 v or 12v) could be caused by a corroded/faulty MPU. What exactly am I looking for on the MPU that would cause this problem?

    #10 68 days ago

    First thing, I'd just unplug the MPU (at least J4, where the power comes in)
    If you still don't have 12V at the test points, I'd pull J3 and check voltage directly on the pins of the connector. If not, maybe a broken wire or bad pin somewhere

    2 weeks later
    #11 52 days ago
    Quoted from shado01:

    OK, back to the original question. I replaced J3 AND put in a new Alltrek solenoid driver board and I still don't get any 5v or 12v on the solenoid driver board. Again my rectifier board is new, it puts out all the correct voltages and I replaced ALL the rectifier connectors. The Alltek pamphlet that came with the solenoid driver board says that this problem (no 5 v or 12v) could be caused by a corroded/faulty MPU. What exactly am I looking for on the MPU that would cause this problem?

    I'd also replace/repin ALL the connectors going into the solenoid board. Be slow and methodical, one pin at a time. Have you tested the bridge rectifiers on this new board?

    shado01

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