Dell MO56UO cable problem

The sensor is not turning on because a broken wire or loose connection inside the STP cable is blocking the electrical power from reaching it.

Solution

1. Cut off the old connectors at both ends of the cable.
2. Strip back the outer jacket to expose the internal wires.
3. Attach new connectors (or re-screw the wires into the terminals), ensuring every color-coded wire matches perfectly on both ends.