How to fix the LED lamp itself

LED lamps have long been in our house. And manufacturers fighting for every customer, not overstating the price tag for the goods, and economies of. And because of this, light begins to fail trite and well, if you have purchased a brand and a lamp warranty period is not yet passed (and you can take to get a new free of charge), and that if this is the Chinese "nouneym" where he does not smell the guarantee go to throw out? Do not hurry. In this article I will tell you how to fix the lamp itself and the repair will cost mere pennies.

How does the light

Before something to repair, it is necessary to know its structure, so let's see the details of what is light.

In fact, the lamp device outrageously simple. It can be divided into three main elements: base with housing, feed and pay directly to the module with diodes.

Opening the housing, you will see the details of the scheme. The overwhelming majority of Chinese bulb condenser are based on current sources. Here, the capacitor - is limiting and current and voltage, as they say, two in one.

For reference. Normal stress lighting unit cell is equal to 3.3 volts while current consumption varies between 21 - 49 mA. In case, if the manufacturer intentionally overestimate these parameters, it will lead to overheating and faster failure.

Generally, LED lamps used in the series connection of diodes. For example, in your corn 50 diodes. This means that their total voltage is equal to 165 volts. A capacitor in combination with resistor and counted as time thereby limiter to a desired level.

Getting to the surf and repairing the unprofitable element

Now we know how to construct the lamp and be able to repair it. To do this, dismantle it and do the initial examination. In the overwhelming number of cases the cause inoperability of the lamp is blown diode. It is fairly easy to identify, even visually, it will differ from the rest. For example, it will have a brown or black dots.

If the external examination has given nothing, the diode can be checked with a multimeter. To do this, set the device on a dial and probes check every item. When the polarity working LED lights, faulty same does not react to the device. Thus, we find the bad element.

Since the wiring diagram of the lamp have a consistent, we need to either replace the LED with a new one or to exclude it from the chain by soldering resistance in parallel to it.

Important. Since in most cases vypayat LED is very complex and requires a soldering station, I will discuss a simpler form of repair, namely the exclusion of the punched element by shunting resistor.

To fix, you will need: a soldering iron, solder, resistors (eg 470 ohm), pincers and cutting pliers

So, we have identified what we are faulty LEDs now take the heated soldering iron and solder resistance parallel to the broken element, as shown in the picture.

With side cutters to bite off too long ends of the resistance and check the efficiency of the lamp.

That's the way with a minimum expenditure of time and money you have restored the LED lamps work.

In addition to the above-described failure you may fail a current limiting resistor and a capacitor. Replacing these cells is extremely simple, you desoldering damaged part and replace it with a new solder with the obligatory polarity (if required) and all.

Another common cause of a soldering defect.

In this case, the chain in our device collapses due to lack of contact (due to bad welds compound seats at the factory). This breakage is eliminated as quickly. Simply re-solder the junction of parts and all.

The more expensive versions switching power supply unit is used instead of the primitive, the aforesaid guarantees stable performance LED panels and LED light bulbs such hardly burn.

But even in these lamps can meet bad welds contacts onaya as easily eliminated, as described above.

If the lamp flickers, it does not mean that it is defective. IN this article I examined in detail why the light may flicker and how to fix it.

Here we are with you and personally repaired the LED lamp, as you can see, nothing fundamentally complicated about it and you can do it yourself if you wish. But I want to note that it is necessary to repair the only quality lamps to the radiator, the cheapest "kitayschinu" it is better to throw away.

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