Usually there is no electricity. Basically, the circuit is broken or the wire is broken. Don't try plugging it in. Baking or short circuit is easy to occur. If it is serious, it may cause an electrical fire at home. General electrical repair shops can repair it. But be sure to find a regular one. I suggest you call customer service for health care. Ask them to check the nearest maintenance point for maintenance. Safe and formal. Danger will also occur after irregular shop maintenance. Be careful.