Re: Emerson LF501EM4F turn on then off.
Take a power supply dialed to 3 volts. Clip a short piece of thin wire (~24 ga) to each lead and slide the wire under the lens, making contact on each end of the LED. You will have to guess on which side is positive and negative and what is the orientation of the diode. However, finding that is pretty easy and quick. Once one diode lights up, proceed down the strip, marking all those that do NOT light up.
Take a power supply dialed to 3 volts. Clip a short piece of thin wire (~24 ga) to each lead and slide the wire under the lens, making contact on each end of the LED. You will have to guess on which side is positive and negative and what is the orientation of the diode. However, finding that is pretty easy and quick. Once one diode lights up, proceed down the strip, marking all those that do NOT light up.
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