The Rechargeable Nail dryer UV Lamp 90w suddenly stops working. How can I find out whether it is a dead battery or a circuit failure?

If your Rechargeable Nail Dryer UV Lamp 90w suddenly stopped working while you were using it, it's usually due to a dead battery or a faulty circuit. First, don't disassemble the device. Check the charging status: Make sure the power adapter is securely plugged into the power jack and the device port, then try charging for at least 30 minutes. Observe the charging indicator light (red for charging, green for completion). If the device starts up normally after charging, it's simply a dead battery issue. Note that if the device doesn't respond during charging (e.g., the indicator light doesn't illuminate), it could indicate a deeper problem.

To further troubleshoot the specific issue with your Rechargeable Nail Dryer UV Lamp 90w, perform a simple test. If the device still doesn't respond after charging, turn it on, it could be a faulty circuit. Inspect the device for damaged wires, stuck buttons, or loose connectors. Also, pay attention to any unusual odors or heat during charging (which could indicate a short circuit). If you have basic electronics knowledge, you can use a multimeter to measure the battery voltage (normal value is approximately 11-12V). Excessively low voltage indicates a defective battery, while normal voltage indicates a problem with the internal circuitry. Avoid disassembly to prevent the risk of electric shock.

Based on the test results, if the device resumes operation after charging, regularly maintain the battery using the original charger. If it still does not work, it is recommended to visit a professional repair shop for circuit inspection. For the Rechargeable Nail Dryer UV Lamp 90w, charging it between uses can extend its lifespan. In short, safety comes first. Do not attempt to repair any potentially live parts, and seek professional assistance immediately to ensure safe use.