Led ceiling lamp is broken. How do you know that the starter is burned or is the LED lamp burning?
LED light does not have a starter, but has a constant current source power supply.Remove the LED light, and then output a resistor with the same power as the LED lamp at the output of the power supply. Then measure the voltage at the two ends of the power supply, which means that the LED light is out of order.
Use a good LED light to change the original one, turn on the power, and if it doesn't light, the starter is broken
To test separately, if the LED light is broken, the bulb will be black
Determine whether the LED ceiling lamp is good or bad, you can measure the LED lamp input power.Method is:1. Turn on the switch, measure the control line and zero line with multimeter. If there is voltage, the light is not bright, the lamp can be basically damaged.2, with the removal method, the tube is installed to other normal work of the lamp.Starter burnout judgement:Lead the line to short starter. If the light is bright, the starter is damaged.
This is not a lot of trouble, ordinary people can hardly distinguish, directly to buy a starter (also known as ballast, actually called the driver, which is a constant current power supply) replaced the probability of bad LED is less than 1%, if LED is really bad if you can try to buy lottery tickets..
