(Topic ID: 233396)

2 coils in my Mata Hari are permanently powered


By effka

6 months ago



Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 6 months ago by BigAl56
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    #1 6 months ago

    bought an old mata hari in not running condition. replaced all displays, installed new mpu and solenoid-board and 3 new coils etc. machine boots now and shows the desired 7 flashes - but 2 coils (right slingshot and outhole) are permanently powered and consequently had to be disconnected in order not to start burning. the remaining game seems to work "fine".does anybody have a suggestion for an old german pinball-lover to make the 2 disconnected coils running properly? thanks in advance.

    #2 6 months ago

    The driver transistors on the solenoid driver board for those two coils have likely blown (shorted) because the current/previous coils had failed/missing diodes.
    Which new solenoid driver board do you have? Can you post a picture?

    #3 6 months ago

    As Quench says. Check the wiring and diodes on those coils. Yellow wire needs to solder to the banded side of the diode. Odd the playfield fuse is not blowing. Should be a 1A SB fuse. Make sure it's not over fused.

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