@PRR1950 posted:You might also consider the power source being used for the DCS system. I vaguely recall some discussion about older power sources not quite getting to -0- volts, even when apparently shut down. Just a thought.
Chuck
Chuck,
Yes but the TIU normally takes it down to zero, regardless of the status of the power source. However here, in the OP's case, it's the TIU that may not be doing it's job.
Mike