Converting Bachmann DCC to DC?

Discussion in 'HO Scale Model Trains' started by chessie4155, Nov 20, 2007.

  1. steamhead

    steamhead Active Member

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    Yes...the decoder boards are in the tender. They have (mine do...) the rectangular 8-pin plug, so a short harness will do the trick. Just remove the jumper plug and plug the decoder in...It's a snap..!!
  2. wjstix

    wjstix Member

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    You can use either a decoder with the 8-pin connector integral to the decoder, or one with a short harness between the decoder and the 8-pin.

    BTW you don't have to match the decoder to the system you use, any decoder will work with any system - I use a Digitrax Zephyr, and have decoders from TCS (the easiest to set the CV's on), Digitrax, Soundtraxx, and I think there's an NCE in there somewhere, along with the QSI sound equipped engines. All work fine.
  3. chessie4155

    chessie4155 Active Member

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    Here;s what I removed.
    [​IMG]
  4. puddlejumper

    puddlejumper Member

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    Light boards. Explains why these units were slower when running with your other engines w/o light boards.

    Dave
  5. chessie4155

    chessie4155 Active Member

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    I thought they looked kind of funny to be DCC boards, I didn't see where you could plug anything into the board. oh well, they run a lot better now.
  6. wjstix

    wjstix Member

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    Hmmm...the only Bachmann engine I have that came DCC equipped (a steam engine) had a lightboard with a small decoder plugged into it. I'd say what you removed are in fact decoders, a light board wouldn't have that much stuff on it. Hang on to them if you decide to change them back to DCC.
  7. chessie4155

    chessie4155 Active Member

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    Ah, Ok, thanks, I will keep them then.
  8. Russ Bellinis

    Russ Bellinis Active Member

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    It looks like those are a combination light board and decoder board. I think that black integrated circuit on one side just off center length wise is probably the decoder chip.
  9. puddlejumper

    puddlejumper Member

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    Ahh, yes, you're probably right. A directional light board would only have diodes on there, no othe chips.

    Dave