LED Bulb reapairing setup

Contents

Finding wattage of SMD LED

Here is the Video explaining how to find the wattage of SMD LED

Video Summary –

Four types of SMD leds rated 1v, 3v, 9v and 12v

LED Bulb Problems and their possible solutions

LED Bulb Flickering

LED bulb flickering can be caused by several reasons. The first reason may be that one of the LEDs in the SMD is faulty or burned out. If this is the case, you can either replace the LED or use an equivalent resistor in its place. Here is a video explaining four ways to do that:

Additionally, here is a video on how to identify the appropriate resistor you can use in place of the burned or faulty SMD LED:

No power in LED SMD

Low glowing and flickering LED

Video summary

First check the smd LED. If the SMD LED is ok then check the output voltage. If the voltage is Low there is problem with IC or Capacitor.
Faulty IC may also result in Low Glow which is due to low voltage output in range of 10 to 70 volts.
Faulty SMD LED may also result in Low Glow.

SMD LED failure due to any reason

OK now you have a doubt that the smd led is faulty. now you should check each led by applying appropriate voltage accoriding to the wattage of the Led. the correct smd led will glow and faulty will not glow. just replace the faulty LED with good one according to their wattage.