DeWalt
No Power / Dead Tool Condition
Vacuum will not turn on at all; no lights, no sound when trigger is pulled
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Completely discharged battery, Defective battery pack, Broken trigger switch, Open circuit in wiring harness
How to Fix / Troubleshooting
Safety: Do not attempt to bypass safety switches or short battery terminals.
- Verify battery: Try a known-good, fully charged DeWalt battery. If the tool powers on, replace the original battery.
- Check battery seating: Ensure the battery clicks firmly into place and the release tabs are not stuck.
- Inspect trigger: If there is no LED or response at all, the trigger switch or internal wiring may be open. Open the handle (if serviceable) and check for broken wires or a loose switch.
- Continuity test: With a multimeter and battery removed, test continuity across the trigger switch when pressed. Replace the switch if it remains open.
- If wiring and switch are good: The control PCB may have failed and should be replaced as a module.
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Repair Difficulty
Medium
3/5
Required Part
Trigger Switch
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