TCS CN-GP decoders

zinker55 Aug 13, 2017

  1. zinker55

    zinker55 TrainBoard Supporter

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    Hello all,

    Really having difficulty with the TCS CN-GP decoders...I'm going to use a lot of them, as I prefer the older Kato frames on the GP30/35....The directions are pretty clear, the 5 wires aren't confusing, I'm isolating the two motor leads with tape.....Any tricks out there......My local hobby store will do the work for me but this is MY hobby....Feeling kinda useless right now.......
     
  2. mu26aeh

    mu26aeh TrainBoard Member

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    My last two I did I ended up tearing out and putting in Digitrax DZ126 using existing light boards ( in Atlas/Kato RS3/11 etc) Both showed no shorts but would not run or light. I sent them to a friend to check out, one was dead and another he got to run but could not control it ie it was full speed as soon as power applied. Unhooked, and wired in the 126's, and no issues in either engine. Both ran right from the get go with no changes.
     
  3. tehachapifan

    tehachapifan TrainBoard Supporter

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    What is the difficulty you are having?
     
  4. mtntrainman

    mtntrainman TrainBoard Supporter

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    The TCS CN-GP decoders work fine. Just dont use electrical tape to isolate the motor. I was a rookie once...lol
     
  5. nscalestation

    nscalestation TrainBoard Supporter

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  6. Bob Horn

    Bob Horn TrainBoard Member

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    I have had nothing but trouble with them. Just pulled 4 from Atlas GP's and replaced the frames with DCC ready frames and replaced with DN163.
     
  7. Ghengis Kong

    Ghengis Kong TrainBoard Supporter

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    I have had only 1 successful TCS CN out of 3 total.
     
  8. zinker55

    zinker55 TrainBoard Supporter

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    Okay,

    Now I don't feel too bad.....These are not difficult at all, but even the one that I sent to TCS a few years ago and they installed it then sent it back won't work correctly....And all it has done is sit in the box....I'm going to try another one tonight, I only require about 25 of these......

    AND thank you nscalestation, I'll put your site on my favorites for sure......
     
  9. Inkaneer

    Inkaneer TrainBoard Member

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    I need a couple of these decoders too but with the mixed results that I see so far I'm hesitant to even try. Thus far all I have done is the drop in, replace the light board, decoders. Nothing too difficult. No soldering or frame modifications involved. The CN-GP was going to be my next step. Now I think I'll wait till others weigh in with their experiences.
     
  10. James Norris

    James Norris TrainBoard Supporter

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    Sometimes, and this can effect several other drop in decoders, the point where the decoder makes contact with the frame is not good enough so the actual power is not transferred to the chip as well as it needs to be. This is often cased by the chassis cast having a slightly larger gap where the decoder clamps in. I have found this with kato and atlas chassis as well. To over come this I flash a little solder on the pad and, if necessary file it down again to ensure a good tight connection. A bad connection on the TCS CN-GP can cause all the issues mentioned above. But they are great chips so its worth the effort. James.
     
    SP-Wolf likes this.
  11. zinker55

    zinker55 TrainBoard Supporter

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    The sets I have installed all have had tight connections, I to have had to flash a little solder on a few....It's really the first step I check....But I certainly will check again.....I'll try another one tonight, as I didn't have time last night....I have nine more sets to try......
     

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