LED lamp with a whole such as bad if not how to detect the lamp with a lamp quality
General lights on the LED are grouped, the group has a bad whole group will not light, inspection is also very easy, with a bad LED one by one, and may be bad on the LED, the light on the show and the bad, change it. You can also use a 100 ohm resistor, and use a multimeter to measure the voltage, too. The voltage is over 3 volts is broken.
Very simple, 2 battery 3V, each lamp does not light the ends of test, bad, LED is also a diode, try again when the reverse voltage is equal to the open circuit test for other beads, beads are measured
Designed for series LED light band, if a string of LED burned out, the whole string is not bright. The lamp band can also be a series of series LED series parallel connection, such as a low voltage lamp belt; 2 x2=3v batteries connected with five 1.5V batteries are connected to the lamp string, and each LED can detect the bad LED.
