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I got the 7938 train set for my kid. I hook up the battery to the receiver and try the IR remote 8879 with it.

The motor starts running/spinning, but I can not control the speed with the orange "joystick" knobs on the remote.

Whether I turn the wheel clockwise or CCW, the speed just ramps up (to max, I guess) faster and faster.

  • Fresh batteries are installed
  • Same channels are selected (also tried all four channels)
  • Switched between red and blue connections

Any ideas why this may be?

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  • For what it's worth - I have seen that happen a few times with my remote as well (albeit just on one of the joysticks iirc), but couldn't reproduce it just now with several combinations of IR receivers (both v1 and v2 fwiw) and motors. I've always suspected a faulty contact, but have never found out for sure. Sep 8 at 15:15

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