To be honest I think it saved my life. If you read reviews before buying this product, you should know that patience is required at the beginning. Once you get the hang of it, troubleshooting LED bulbs becomes a breeze. Here's how I used it for my LED icicle lights. 1) Plug the light into an outlet and identify the section where the light is not working. 2) Use the clamps to define the section. 3) Connect the light to be repaired. Socket of the tool and pick a random area between the terminals 4) I prefer the last LED found on the icicle as it's easy to isolate a wire for testing purposes. 5) After positioning the wire and pressing the trigger, see if any lights come on. If he can't find another place to test in the section. 6) If some of the LEDs light up, move the clamps closer and narrow down the section that isn't working. Repeat steps 3-57) Once you get to an icicle and notice 2 or 3 that never light up, you can bet one of those LEDs needs replacing. . The first lasted 20-30 minutes.
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