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Initial Diagnosis of Faulty LED Light — Check LED Driver/Power Supply

Beginner3 hours

Part of project

How to Fix Flickering LED Stair Lights · Step 3 of 6

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The presenter first shows a flickering LED ceiling light and then an LED bulb that is completely dead. To diagnose the flickering ceiling light, a multimeter is used to test the voltage output from the driver section. The multimeter reads approximately 114V DC, which indicates that the driver is supplying power as expected. This rules out the driver as the cause of the flickering, pointing to the MCPCB (Metal Core Printed Circuit Board) and its LED chips as the source of the problem. Faulty LEDs typically have a small black dot on their surface.

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Friends, how are you all? I hope you all are well. Today's video is going to be very special for you guys. You must watch this video. Today I have a concealed ceiling light that I will be repairing. It is in absolutely dead condition. But sometimes the lights blink a little bit. And there is also an LED bulb which is absolutely bad. So there are two sections in it. There is a driver below. MCPCB is located above. So in MCB PCB MCPCB section I will tell about the faults that may occur. So let me turn it on first. So you will see that these lights are coming very slowly. So this blinking problem can come from two places. One from your lower driver section and second from the upper one, if any LED of the MCPCB is faulty then from there also. Now look, I keep this multimeter on DC mode. So, when you have to

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