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How do you fix an LED display on a GE clock radio? |
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Sorry, you can't.
led's are not light bulbs, ergo they have no filiment. They seldom fail. You can test the device, by unsoldering one end so it is isolated from circuitry, Then use a volt-ohm-meter on a high scale for ohms. place the leads from the meter (one lead on one end, the other on the other led lead. It is just a diode and should conduct in one direction only. if you get an open on the first try, reverse the meter leads and if the ratio is > 20 to 1 after reversing the leads, the LED is good, and you either have a voltage bias problem or a bad soldier connection. So the diode only conducts in one direction, if it doesn't conduct in either direction the led has an open junction, and is bad. If it conducts in both directions it has shorted junction. remember to keep your fingers off the leads because you are a high resistance impedance, and will give a false reading. Leds have a MTTF of about 20 years depending on the on/off time and current drawn when biased on. sorry MTTF= mean time to failure.
First answer by Daddybear. Last edit by Rod7973. Contributor trust: 20 [recommend contributor]. Question popularity: 34 [recommend question]
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