Changed over to DCC on my layout and am having problems with 4 of the 5 locomotives. They worked fine on DC and was very quiet. Now they still work great but they have have a horrific whining noise coming from them.
I have trid to lube them, no different. Taken them apart several times, still the same. Took the only one that was quiet apart to see if there was anything different, NOTHING!
These are Atlas GP30 in "N" scale
Mrc Prodigy Advance 2 Dcc
TCS CN-GP decoders
Am I missing something in the programing or is this normal.