They might have problems reproducing such an intermittent problem without running the train. Often times such a problem clears up when someone physically messes

They might have problems reproducing such an intermittent problem without running the train. Often times such a problem clears up when someone physically messes with the hardware. Under such circumstances the problem would probably be solved by taking the circuit board that does the communications out and then carefully placing it in the garbage, possibly physically destroying it first. Not all problems can be troubleshot and there are some things that remain mysteries forever.