Good morning, I have a B&O Weaver SD-40 with QSI Proto Sounds (#1323LP) . Have had it for 20+ years, never ran it, probably bought it used. Figured I would sell it, so I removed the white MTH battery in it, replaced with a BCR, lubed it, and it seems to operate ok with my ZW, but the horn blasts constantly in the cab forward direction. I don't see that issue addressed in it's instructions , any ideas ? Thks in advance !
Rich in SD
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If your SD40 is one of the very first ProtoSound models made then this is quite probably expected behavior. They are very picky about which transformers you use.
Can you try a different model of transformer?
Mike
BTW -- Later model ProtoSound models do not have this problem.
Some of the ancient PC boards, had a built in problem indicator, (Horn blows constantly). If one or both can motors stopped turning, the horn would sound constantly. One of the motors may not turn, in the Cab forward direction??? Could be wrong and often. Mike CT.
I have a Williams diesel that the horn blows constantly when using all of my Lionel transformers, but works fine when using my MTH Z-1000. Go figure!
Ron
You might try reversing power leads to the track. Makes a difference with my MTH engines.
Alas reversing leads did not help. And trying it with my MTH Z4000 did not help either. It’s getting cut from the team now.
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