Best Way To Test Led Christmas Lights

It also has an audible continuity detector that traces the point of interruption in the circuit.

Best way to test led christmas lights.

Begin at one end of the darkened string of christmas lights and carefully remove the first bulb. Make sure that the cathode and anode are not touching each other during this test which may prevent the current from. The fist step is to find the led that is no longer working. Some christmas light strings have more than one fuse in which case they ll be next to each other.

Christmas light testers the most convenient way to test for faulty bulbs in a light string is through the use of a light tester. The non working led will obviously be in the string half that is not working. From the string and move it along the cord until it stops beeping at the defective bulb. New christmas light fuses are available where christmas lights are sold and at some electronics stores.

Step 2 locate the two wires on the bottom of the bulb and touch a probe to each wire ensuring that the probes do not touch each other or more than one wire. With the lights plugged in use the voltage detector to check the live voltage wire between each light starting at the end that plugs into the wall outlet. Check out our recommendations for the best extension cords for outdoor christmas lights displays. The black and red probes should also not be touching each other during the test.

Before tasking your family with stringing the lights around the tree or other object in your home test the lights thoroughly by plugging each strand into a powered outlet and allowing them to burn for at least five to ten minutes. This applies to even brand new lights fresh out of the box. Making the connections should cause the led to light up. Although you can easily test an led by connecting it to a circuit and seeing if it will light up you can also use a multimeter with a diode test function to test an led and discover a few more things about it too.

Light testers search for the point in the string where the voltage changes between a good bulb with current flowing and a problem area with minimal current. First slide back the plastic covering on the plug to check the christmas light fuse. Pull the trigger and it sends an energy pulse that after a while will activate the shunt. If you can t find where the circuit is broken this christmas light tester can also work as a voltage detector.

How to test a diode with a multimeter connect the black lead to the com terminal on the multimeter.