Vacuum does not turn on at all; no lights, no sound when trigger is pulled.

Safety first: Remove the battery before inspecting the tool.

• Verify battery charge: Charge the battery fully on a Makita charger. Confirm that the charger shows normal charging and that the battery fuel gauge (if present) indicates charge.
• Try another battery: Install a different known-good Makita battery compatible with your vacuum. If the unit powers on, replace the original battery.
• Inspect battery terminals: Check the tool and battery contacts for dirt, corrosion, or bent pins. Clean gently with a dry cloth.
• Check trigger feel: Squeeze the trigger. If it feels loose, stuck, or does not spring back, the switch may be broken and require replacement.
• If still dead with good battery: The internal wiring, trigger switch, or control PCB is likely open. Disassembly and electrical testing should be performed by a Makita service technician.