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Mat9vtrain

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About Mat9vtrain

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  • What is favorite LEGO theme? (we need this info to prevent spam)
    Metroliner
  • Which LEGO set did you recently purchase or build?
    Metroliner

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    Germany

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  1. Mat9vtrain
    Hi all. After owning a 4558 Metroliner in 1991 which was sold 6 years later I now, 30 years later, want to step back into the 9V Lego train topic. I found a 9V speed regulator which doesn't work (green LED is off and train doesn't run). The transformer defintely works. I measure 11,85V AC as incomming voltage. What part can be broken in the circuit? I measured diode D1 and D6 and compared this with the result of a working speed regulator. The values are exactly the same. Also both capacitors C1 and C2 are looking good.
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