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ModelRailroadForums.com is a free Model Railroad Discussion Forum and photo gallery. We cover all scales and sizes of model railroads. Whether you're a master model railroader or just getting started, you'll find something of interest here.


  1. M

    751D pulsing on startup

    Hi all. I’m installing five 751D switches to Five PECO motors/solenoids. The power supply I’m using is an old laptop psu (18.5V DC, 3.5A). My issue is when I have more than two switches and turnouts wired up they pulse on and off at startup as if there Isn’t enough power. After it pulses for a...




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