Remove the screws holding the cover plate on the light switch with a slotted screwdriver. If the switch is good then there will be a reading or indication otherwise no reading or indication means that the switch is bad.
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How to test a light switch without a tester. Toggle the switch into the on and off position with the test leads attached to the terminals of the switch. Testing a switch with a voltage tester. How to troubleshoot light switches and replace it can be easy and diy project. Testing any type of light switch takes a few basic tools. How to tell if an electric light switch is bad. Turn the switch off and test again.
This video will show you how to check your light switch and how to replace a light switch step by step. If the specific breaker is not identified turn off the main power switch. Your switch may be attached to a frame by screws which youll need to take out or it may just be sitting up against the wall. You will need to take them completely out of the box to free up the switch. Touch the probes to the copper terminals on the side of the switch. Turn off the power to the light circuit at the breaker panel.
After that loosen the screws that hold the switch into the electrical box. This indicates that electrical continuity exists through the switch. Remove the switch cover plate by unscrewing its two small screws to test whether it is safe to proceed to replace or rewire a wall switch. Once youve confirmed that theres no electrical current in your switch you are ready to remove it. Pull the switch out of the box a few inches until the wires that are attached to the switch are exposed. Pull the light switch from the wall.
You also need a non contact voltage tester to check the switch and wires for power before touching them. Youll need screwdrivers usually one flat head and one phillips for removing the switch and disconnecting the switch wires. With the power off remove the two screws that hold the cover plate on. According to the university of washington you should see a reading of less than 25 ohms.
Gallery of How To Test A Light Switch Without A Tester
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