Recently received a USA Trains GP/9 with an ESU Loksound 4 XL installed. When I placed the loco on the test track it was buzzing as if a DC train on a DCC track. I lifted off and replaced and then replaced and found that the loco was short circuiting. When I lifted one of the bogies off the track the sound started and when I placed back on the track it short circuited.
Also when I placed on programme track the NCE pro cab 10 amp would not read the decoder.