(Topic ID: 342798)

System 11B (Jokerz!) Switched Solenoids

By shado01

10 months ago



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  • 10 posts
  • 4 Pinsiders participating
  • Latest reply 10 months ago by slochar
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    #1 10 months ago

    When I turn the game on, all the switched solenoids lock on (drop targets, kickers, knocker). If I disconnect J11 from the CPU the game starts fine. All the transistors check good on the CPU. Any suggestions for next step in trouble shooting?

    #2 10 months ago
    Quoted from shado01:

    When I turn the game on, all the switched solenoids lock on (drop targets, kickers, knocker). If I disconnect J11 from the CPU the game starts fine. All the transistors check good on the CPU. Any suggestions for next step in trouble shooting?

    Hello. I have Williams Cyclone (with the same system 11B). Is the troubles in "row 8, switch 1 to 8, see redmarked in the picture below?

    Jokerz Switch (resized).PNGJokerz Switch (resized).PNG
    #3 10 months ago

    The "switched solenoids" in Jokerz! are all actuated through switches on different switch rows and switch columns.

    #5 10 months ago

    Excellent question, can you test the relay or just replace it?

    #6 10 months ago
    Quoted from shado01:

    Excellent question, can you test the relay or just replace it?

    https://techniek.flipperwinkel.nl/wms11/index1.htm#trans

    Use this guide - take a look at section 3B

    #7 10 months ago

    I ran the test provided in the guide. The relay was not working. Q8 checked good. I replaced the relay. I started the game and the coils locked again, no change. I turned the game off. the new relay no longer works correctly. Q8 still tests good.

    #8 10 months ago
    Quoted from shado01:

    The "switched solenoids" in Jokerz! are all actuated through switches on different switch rows and switch columns.

    Switched solenoids (non special solenoids in sys 11) are activated in reaction to software control not directly by switches. Yes, switches act as inputs to the software like if the drops are all down the software reacts, but in game over mode no solenoids should react to switch inputs.

    You can verify this by going into switch levels test make sure none are showing closed that shouldn't.

    All solenoids locked on points to a blown solenoid control chip. Any corrosion damage on the board?

    #9 10 months ago

    I ran the solenoid test. As the game was running the first eight test steps (the switched solenoids), no coils fired on the A side, and the flashers for step 6C, Left UPF/"JO" (l), illuminated on every C side step, 1 through 8. The flashers/lamps appeared to be receiving very high voltage. The remainder of the test went fine (controlled and special solenoids). Is this telling me the AC relay on the Aux Power Board is bad?

    #10 10 months ago

    Was the relay clicking on and off during the solenoid test?

    It sounds as though your fuse for the A side solenoids is blown if the relay is clicking on and off. If the relay clicks on and stays on, your transistor for the a/c relay is likely shorted.

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