Lionel Alco S-4 problems

Bill TerryOGR Forum Member

I have the Northern Pacific Alco S-4 diesel that I bought new when first released many years ago. This little diesel has traveled a ton of miles over the years.

It is TMCC with RS

Problem that has developed is that it will not move in forward but will run fine in reverse. Directional lights, couplers, sounds all work with no issues.

I know this loco is a ugly bear to open up with the snap tabs that can be damaged, any ideas what happened to the forward operation ?

Thanks

1/18/129:26 AM

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Original Post

iguanaman3OGR Forum Member

Most likely it is the motor driver board, there are seperate components for fwd and rev. I have had similar failures.

Neil

1/18/1211:18 AM

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