HO Spectrum 2-10-2

[Bill Hansen]

Have had an HO Spectrum 2-10-2 for 5 years.  Been running it on a DC system. Recently the reverse operation has failed; forward operation continues to be OK.

Any ideas for troubleshooting the problem?

[Flare]

Does this happen with other locomotives using the same controller?

[Bill Hansen]

No. Forward and reverse is operational on all other locomotives.

[WoundedBear]

It's DCC "ready" or "equipped" right? Would a bad decoder or loose dummy plug cause an issue like this? I know you run it on DC, but a DCC "equipped" will have it's decoder and a "ready" model will have the dummy plug.

Sid

[Flare]

It's DCC "ready" or "equipped" right? Would a bad decoder or loose dummy plug cause an issue like this? I know you run it on DC, but a DCC "equipped" will have it's decoder and a "ready" model will have the dummy plug.

Sid

If either direction works I doubt it's a wiring problem because the motor turns, I don't see how reversing the polarity would change anything.

However, if the loco does have a decoder it may have developed a glitch:  Resetting the decoder to factory settings would probably fix it.


Bill, try taking the loco to a shop with a DCC system.  In most decoders, programing CV8 to 8 will initiate the reset.


Otherwise there may be a mechanical explanation, perhaps something has come loose or broken off and is now rubbing against a gear?

[rich1998]

Here is the diagram of the loco, DCC on board or analog version in case you do not have this diagram.
I am not sure what would do this yet.

https://www.bachmanntrains.com/home-usa/dwg/dwgs/H833X-IS001.PDF

Rich