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Of course, when it was time for renovation, the workers made the lines stringed. This problem is more troublesome, if your wires are hidden, then you may need to reconnect a line to the living room, and it cannot be hidden in the wall. And it can only be done in the living room alone, because it is impossible to keep the switch in the room.
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It may be that the worker connected the main power supply in the living room to the switch in the room.
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The line is connected in series, and the electrician should be asked to change it.
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Explain that the switch in the living room is connected.
A set of threads was broken. It may be loose to form a tandem.
There is a problem with the wires inside, the wires inside may be strung in some places, and there may be reasons why the tape is not wrapped well in the knots, find an electrician to check it
The sectionalizer is damaged, installed in the lamp, and the problem can be solved by replacing it, generally more than ten dollars.
Are the switches and sockets one and the same? If it is integrated, the internal contact of the switch line is poor. >>>More
Either the light is broken, or the switch is broken; Disassemble it first and connect it directly with a wire, if the switch is broken, change the switch yourself.