Reply to "Innards and repairs of an MTH Premier SF 4-8-4"

GGGOGR Forum Member

Using a limiting resistor of about 150-300 ohms test the marker LEDs with a 9V battery. Red to positive. If they are dead, you need to get a MTH replacement harness, though yellow seems to be a tough fill for MTH.

They are LEDs not bulbs. Since this has a mux board, there could be other issues causing harness not to light. Mux issue, wire issue, PS-2 board issue. So lets find out if they are dead first. G

5/23/159:51 AM

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