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I have a MTH F-3 AA pair that has QSI PS-1 boards.  The engines are tethered together and the boards are different in each unit.  Both engines have two motors.  The engines run okay but after running for a couple of minutes the horn starts blowing on its own fairly frequently.  How can I fix this?  Anybody have an old spare board?

Thanks

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@DougC,

The orange sticker on the sound chip says "Scale F-3 Reading".  This leads to a Product Number that appears to be 20-2198-1.   According to the MTH website it was released in 1999, and so is among the last Proto-1's made.

This means that the software should be quite robust, as opposed to locomotives made in 1994 or 1995 which have known software issues.

Because of this you likely have a hardware problem, and not an operator error or software bug or oddity, and so @GGG is a good person to contact for help.

Let us know when you find the specific problem.  It's always nice to learn how these kinds of things turn out.

Mike

.., nobody said cleanup track, wheels, pickup rollers? Just saying, the easy obvious should do things first???

Vernon,

Agreed, and you're 100% correct, but ...

You do realize that you're telling us to point out things that you don't normally point out either?

To fix this oversight these obvious things should indeed be listed at the front of every initial response we make, before any other suggestion, immediately after the obligatory question "What's the Product Number?" when it isn't provided.

Mike

Last edited by Mellow Hudson Mike

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