Today, we show you a quick method to check if a standard LED and / or SMD LED works or has been damaged (burnt through). A LED is a Light Emitting Diode, so essentially a special diode that emits light. A Digital Multi-Meter (DMM) has quite often a diode test mode / functionality, and this is what happens when you use it on LEDs!

Note: while this quick test works with most standard LEDs and SMD LEDs, it does not work on ALL the LEDs since new design, packing up more and more energy (like the COB, the 9V / 18V / 36V packages...) with ever increasing power requirements are now continuously released... nevertheless, still handy to know!

► DISCLAIMER
Always make sure you operate in a safe and secure manner.
Disconnect anything you want to test

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