How did you get these results? I am mainly puzzled because the 6100's run on 20V so it should not be possible to get a result above 20V. If you want to send them in I can test them, we use a Borg Warner Fault Current Alarm which basically just gives us a yes/no answer on whether stray voltage is present but it has to excede 12V, most electronics will produce some stray voltage but it should be miniscule amounts. We also would run a test on watt meter and this would show a greater amount of power is being consumed then is normal, if you have losses the demand would have to be higher than normal.