I inherited a large collection of MTH "O" gauge trains with PS2. I've got about a half a dozen that have various issues. Most all of the have working sounds. Some only go forward & some not at all. Yes I checked the switches on the bottom for forward only. I've heard rumors that the PS2 system can create havoc on the motor. What can I do or check to get these engines to work properly without sending them for service?
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