“Recently developed a problem with one of my older diesels, an N scale Bachmann with Econami factory installled. Def used is ECO-100 Diesel.

Sound was fine, loco would not move.”

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Can you blow horn, turn lights off/on, etc.?

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If so, the brake may be set in the decoder, and/or other settings that impact startup/shutdown/speed increase/decrease, etc.?

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My bet is on the brake function.? Refer to the instructions that came with the loco.? Check the Soundtraxx website for additional in depth information about the Soundtraxx decoder products.

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“On the programming track, I loaded the loco's DecoderPro roster entry file and used the CVs tab to compare all values. No differences. Loco still not moving.”

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The compare process will only show differences between what is currently in the decoder, and what Decoder Pro has on file for it.? Totally read only, plus display of differences where noticed.

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“Did a Reset. Loco now moves.”

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Not surprised.

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“Rewrote all CVs from the loco's roster entry file. Loco now will again not move. ?To emphasize, these settings have worked fine for years.”

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Works fine right after a reset, but once the record in DP is written back to the loco it no longer works, correct?? Sounds more and more like it could be related to having brakes applied.

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“Are there some settings somewhere that DecoderPro can not see or change, except by reset?”

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Decoder Pro doesn’t know what should be set/reset on any given decoder.?? Decoder Pro issues a “reset” command to the decoder; the decoder then performs its own reset according to whatever logic is built into _that_ decoder.

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Depending on what a decoder and its logic need to do to support certain functionality there very well could be memory of some type in the decoder other than CVs that the decoder uses to support the functionality offered.? Whether or not memory allocated for such a purpose is cleared/reset/initialized by a decoder reset would be a function of the decoder design.

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I’d dig into the decoder documentation and the manuals on the Soundraxx site.? If you don’t find something there, you might want to check with Soundtraxx Tech Support.

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Best Regards,

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Steve

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Steve Haas

Snoqualmie, WA