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Question:

Household led lights all of a sudden not bright? What's the matter?

The lights suddenly not at home this evening! Can't say no! There are several have a little light! Feeling superior and see what's going on! Light bought less than half a year! The following two pictures were taken by the night!

Answer:

Estimation is very cheap LED lamps and lanterns, can the quality of the LED lamp bead is not good, plus if the power part is a simple RC step-down, will lead to the LED lamp bead aging droop failure quickly. Only buy a new one, don't be anxious to get things on the cheap goods.
If it is suddenly not very bright, usually because of its heart - LED drive power quality problems, the result of current is not enough. You can open it and have a look at the LED string, and power, to find a professional power supply company with power supply, diy connected the input and output line. If the trouble is returned to the manufacturer maintenance, this problem should be something for manufacturers. If it is used with the not so bright, like how did not suddenly don't bright, quality problem is LED lamp bead, light failure is too big. If a lamp is on there are a lot of small lights bead is unlikely this case maintenance, cost and the cost is too big, can only be changed directly. If it is only a high-power lamp bead and COB encapsulation of LED, don't bother you also can buy back to transfer the lamp bead.
If it is a faint red glow, it should be light bead is burnt out, burned-out lamp bead affects the total current circuit. Give you a reference, look closely, the circle is bad, and good difference or see, if the lamp bead welding the necrosis a short take a try.

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