Author Topic: Digitrax sound decoder install problem  (Read 711 times)

0 Members and 1 Guest are viewing this topic.


  • Crew
  • *
  • Posts: 484
  • Gender: Male
  • HCD module mania!
  • Respect: +1
Digitrax sound decoder install problem
« on: March 17, 2012, 09:26:16 PM »

So I got spunky and picked up a Digitrax SDN1440A0 Sound FX decoder and installed it in my Atlas Mopac GP38-2...installation went pretty well, checked everything when I got the decoder installed before putting the shell back on.

After I put the shell back on and ran it, the engine runs for about five seconds then resets, runs about ten or so seconds and resets...runs for a bit (couple minutes) then resets...

I'm a little perplexed at what might be happening...I'm guessing something is shorting out but I'm not sure where to start looking???

OH, the sound is SO COOL!!!!
Jesus is my engineer! :)


  • Crew
  • *
  • Posts: 3134
  • Respect: +399
Re: Digitrax sound decoder install problem
« Reply #1 on: March 17, 2012, 11:09:12 PM »
Sometimes the factory capacitors on these things are just too small, and installing a larger capacitor can make a difference.

If you do install an electrolytic capacitor, make sure you observe correct polarity.