Cordless Shark vacuum will not start at all; no lights, no response when pressing power button

Safety first: Do not attempt to open the battery pack. Remove the battery before opening any vacuum housings.

• 1. Check battery charge: Place the battery on the charger and verify that the charger LED indicates charging. If there is no LED, test another outlet or charger.
• 2. Try a known‑good battery: If available, install another compatible Shark battery. If the vacuum powers on, the original battery is faulty.
• 3. Inspect battery contacts: Look for bent or recessed contacts in the battery compartment. Clean gently with a dry cloth.
• 4. Check power button action: Press the power button or trigger repeatedly. If it feels loose, stuck, or does not click, the switch may be broken.
• 5. Seek professional repair for internal faults: If a known‑good battery does not restore power and the switch feels normal, the main PCB or internal wiring is likely defective. These require disassembly and should be handled by a technician or by replacing the main body.