I purchased an Air Force 44 Ton switcher this past summer (NIB) and have yet to get away from the unit dropping into what I will call the PS3 screech mode. Both the chain file and sound file have been loaded multiple times, but to no avail. Today, I downloaded the files once again to ensure nothing was corrupt, cleaned the engine wheels and download track, and powered the engine on/off multiple times after a successful download. The engine would run perfectly fine until it was shut down and restarted, then it may or may not start up without the high pitched noise. I have noticed that the engine sounds stop almost immediately when I kill the power.
I am at the point where a MTH tech is probably required. Any thoughts?
I'm also interested in understanding what fix they would have minus installing a new board.
Thanks!