When the lights are turned on, the lights flash, and there is no electricity, but what is the matter

You can consider seeing if the main line joint is loose and the contact is poor, and first check whether the main brake screw is loose. If you have an open line indoors, you can try tapping each joint moderately with a voltage tester or an insulated screwdriver to determine the cause of the problem if the light is on.

There is a short-circuit place in the electrical equipment at home, and the problem occurs to you, which may be your short-circuit equipment plug may be two plugs, and there is no grounding protection, so when there is a short circuit, the relay is not adjusted, indicating that your home line has a burned place, carefully look for it and smell the smell that there is a burning smell in that place, and the problem is in that piece.

If the bulb is broken or the lamp head is short-circuited and disconnected, but the brake does not jump, check the bulb circuit. Empty open protection will not cause fire.

Is there a leakage to see if the terminal post is next to the ground.

If you can't push it, the circuit is faulty, and you can ask the community maintenance personnel to come to repair.