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Reply to "Train America Studios EOB - No Lights"

George, some of those didn't work reliably.  I suspect somewhere there's either a cap or resistor load.  Obviously, if there's a bulb on the circuit as well, that will do the trick.  FWIW, I've seen engines come in that had just an LED, and sometimes they'd light, and sometimes they wouldn't.  For reliable operation, I just pop the cap in and all is well.

It's well known that an LED alone doesn't trigger the triac as it doesn't present a load until it gets to around 2.5 volts.   In years past, I used to use resistors, but then I found out that the capacitors worked as well, and they don't present any load (or get warm).  The ERR TMCC boards all have the .01uf caps across the outputs as a standard feature, they're built into the board.

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