Well, I had previously posted that three of my locomotives seem to have an issue like they were shorting out. I changed out one of the decoders. The locomotive now runs just fine. My eight year old son informed me last night. That him and my grandson were running trains a few weeks ago and it started doing goofy stuff. On the controller. I guess that's why the locomotives were all off the track, LOL. Evidently either the cat or my son or the grandson. Must have done something. And shorted out the track. And ruined three decoders. Fortunately, these were not decoders with sound. Has anybody else ever had anything like this happen? And is there any way to repair the decoder?