Fault Phenomenon: JLG 1250AJP telescopic boom aerial work platform with no load, reports overload, cannot rise.

Troubleshooting Process:
– Checked sensor: zero-point drift.
– Checked wiring: wiring shorted.
– Checked calibration: calibration parameter error.
– Checked mechanical: mechanical binding.

Root Cause: The platform overload sensor has zero-point drift or is damaged.

Required Parts: Overload sensor and recalibration.