When encountered, the entire junction box is broken. In this case, the junction box must be replaced. When replacing the junction box, first break the old junction box with pliers and take it out of the wall. This link is more troublesome, because although the junction box is damaged, it is still stuck in the wall. Take care not to damage the wires when taking it out. After taking out the junction box, take out the stones and other sundries in the junction box slot on the wall. Then put the new junction box in.
When putting in a new junction box, pay attention to putting a proper amount of structural glue into the wall groove to fix the new junction box before placing the junction box. Before placing the junction box, insert the wires into the junction box. In order to avoid damage to the wires when installing the junction box, a trench can be dug into the new junction box. When inserting the junction box, you can use a wooden rod or iron rod to hold the bottom of the junction box and use a hammer to drive it in.