How can the strip of the light tube be lit by the LED LCD screen removed

In fact, it is relatively simple to light up, and it is enough to use a transformer of an LED driver, which should not be possible for individuals.

1.The larger image shows a line called fcc that is the current in.

2.Voltage: 220V 50Hz

dc 19ma*6ch

3.The output current of the transformer is below 24V, but the brightness is different.

There are two models of units available on my side.

Driver Model: XIL-006 Nanjing Xiangguang Technology **** 025 58281023

FZ-2401 Made in Taiwan.

Personally, it is not recommended to use it alone as a luminaire, and the LED heats up.

Larger, as a backlight structure with a heat sink.

exists, and you can see that there is a very thin layer of metal behind the white panel.

If it is used alone to emit light, it loses the heat sink, which is more dangerous.

Technical Engineer at LG Display.

Sincerely! The PCB in the above picture is detached from the panel, and the display effect is controlled, and it has nothing to do with BL, so you don't need to think about it.

To add resistance, the general lamp is used in series and direct current, there is a formula for calculating resistance, and that formula cannot be said here....If you want to know, wait a while.

Connect all the LED tubes in parallel, connect the negative electrodes, and connect the positive stages! If you want to look good, you should have a board.

The replacement of the LCD lamp needs to be carried out by disassembling the machine, opening the panel and other operations, and the specific operation steps are as follows:

1. Remove the backplate: unscrew all the screws on the backplate of the monitor, if you are sure that all the screws have been removed, and the backplate has not yet fallen off, then there should be a lock stuck on the backplate, break the backplate hard, use a screwdriver to insert the notch, pry it along the edge, and remove the backplate.

2. Remove the control button: Next, remove the front panel of the monitor from the metal shell, remove the small circuit board of the control button on the panel, if the individual control buttons cannot work normally in daily use, you can clean it up, and it can usually be restored to normal.

3. Replace the capacitor: The crack or bloated shell on the capacitor is observed, if you find a similar problem, you can consider replacing the capacitor by the way.

4. Open the panel: In order to replace the fluorescent tube, we need to disassemble the LCD screen on the panel, remove the shielding foil and plexiglass plate layer by layer, and place them in a clean place in the same order.

5. Switch the backlight tube: remove all the backlight tubes, and some displays can even find a way to change the backlight tube to LED light. After replacing the backlight tube, reassemble the display in reverse order.

Notes:

The lamp must be carefully and carefully replaced to avoid damaging the LCD screen, if the LCD screen is damaged, it will not be repaired.

Method: 1. Remove the old fluorescent lamp tube, there are springs on both sides, and push it to one side with a little bit of local force to come out;

2. Remove the bracket cover, press the bottom plate with the left hand, hold the cover plate with the right hand and pull it up, and the cover plate can be removed;

3. Remove the electronic ballast, cut the input line and output line of the electronic ballast with diagonal pliers, and use a screwdriver to screw out the screws fixing the electronic ballast;

4. Wiring, strip the wires and bracket ports of the power grid with wire strippers, expose the copper 3cm to connect the wires and bracket ports of the power grid and wrap them with electrical tape;

5. Cover the cover plate tightly, straighten out the wrapped wire, and fix it in the bracket hand groove, hold the cover plate with both hands, and press it down hard to cover the cover plate;

6. Put the wiring plugs at both ends of the LED tube against the mounting seam of the bracket, you can easily put it in, and then twist half a circle to install the LED tube.

Selection of T5 and T8 lamps:

Lighting effects and lighting quality.

Based on the sunlight color rendering r=100, the r value of high-performance T5 replacement fluorescent lamps is: R 85. The larger the color rendering index r value of the light source, the better the color rendering performance of the light source and the closer to natural light, and the working frequency of the T5 replacement fluorescent lamp with good technical performance and electronic ballast should be above 40 thousand cycles (kHz).

The strobe depth of the energy-saving lamp is less than 5%, the luminous flux is stable, and there is no strobe effect.

2.Electricity power savings and power saving rate.

Power substitution ratio: After the substitution, the lighting effect is improved, and the power substitution ratio should be more than 1:, that is, the power-saving rate reaches more than 40%.

3.Environmental adaptability.

The T5 series products can work reliably under the following conditions: AC150V---260V voltage range, in the power grid with serious harmonics, and in the environment of -15 ten 50. d.

Life and failure rate: According to the R&D and production technology level of high-performance T5 replacement fluorescent lamps. Its average working life should be 10,000 to 20,000 hours, and the failure rate should be within 5.

The lamp tube of the display can indeed be replaced, but it can only be matched by design, this kind of thing is only available in professional production factories, I can clearly tell you that Acer has no way to replace the lamp for you, because he is a brand, his products are OEM in other factories, and the lamp is a material in the display screen, which can only be repaired when it returns to the factory of the screen, so you understand this process, you know that he has a basis for asking for money. But if it's too much, I don't know. Thank you.

The most important thing for a monitor is this screen! Therefore, if you want to try to disassemble the screen and change the lamp, you must be quite careful, once the operation is improper, there will be leakage, bright lines, blurred screens and other phenomena! But there should be no problem with careful step-by-step dismantling, the first thing you have to do is to find a flat and clean platform, it is best to find something to pad for backup, and then start to remove the screws of the screen, be sure to keep the desktop flat and clean.

The first step is to disassemble the iron frame of the screen, you pay attention to it, it is all buckle, there can be a small flat taper, after the iron frame is opened, take out the screen panel, and put it on the platform just prepared. Then, it is the glass plate, which fixes him with a plastic frame and a bayonet, and when you take off the glass plate, you can see that the upper and lower groups of lamps are stuck on a light guide plate! Replace the broken lamp.

Then, put it back in the order in which it was disassembled! It is important to note that there must be no visible garbage on the glass plate, and each object must be loaded.

Nothing else, good luck!

Actually, it's not a big deal, I just finished changing the lamps on this monitor. Remember the program when you turn it on, and remember to install it the other way around after replacing the lamp.

Samsung943nw's high-voltage and power strip are integrated, which can be found on **, about 50 yuan, as long as you can disassemble and install it yourself, they are all plugged in.

Summary. How to take out the circuit board inside the LED light, hello! Electric soldering iron + tin wire, the pins on both sides are heated together, and the tin is added while heating with a soldering iron, the speed should be fast, the tin on the pins is fully melted, and the chip can be removed.

How to touch the circuit board inside the LED lamp and take it out, hello! Electric soldering iron + tin vertical line, the two sides of the tube laugh fiber guess the foot together to heat, while heating with a soldering iron while adding tin, the speed should be fast, the tin on the pin is all melted, and the chip can be removed.

Relevant information If you have not used a soldering iron, or if you don't use a soldering iron, you can't take it down, and if you don't know how to get it, you still need to find a professional to dislike it, so as not to break the board and not repair it.

How to take. 2. When the letter is opened, the lamp tube should first pull the plug on the rectifier from the lamp, and then break the circlip that fixes the lamp and remove the lamp. 3. The rectifier of the rectifier fluorescent tube is generally fixed on the chassis of the ceiling lamp with screws and connected to the wires on the ceiling.

Then unscrew the screws and remove the rectifier Beijing Qinghe High-speed Railway Station**. 4. Install the ceiling lamp LED light source LED ceiling light source is derived from the magnet, directly adsorbed on the base, connect the wires on the ceiling, cover the lampshade, and your home will be replaced with a small ghost LED light.

The LED light you mentioned as "bright" should be a faint glow, which is different from the normal lighting.

The voltage of LED lamp beads is very low, usually only 3V, and the normal lighting is milliampere-level current, and the glow only needs micro-ampere-level current. So if there is a leakage in the line, it will make the LED glow.

The connection lighting circuit in the figure below leaks electricity at point A, and the LEDs will glow when the switch is turned on. It doesn't matter if there is a switch or where the switch is located:

So even removing the switch won't help.

If the fault is caused by the above reasons. You can switch the position of the live wire and the neutral line to the following connection, and the glow phenomenon will not occur:

In fact, the first line is an irregular connection, and the switch is not placed in the position of cutting off the live wire. This is very common in home wiring, so it is not uncommon for LED lights to be slightly lit when the lights are turned off.

In this case, it is likely that there is a short circuit in the internal circuit, and if you remove the switch, it will also cause a loop, and the switch you plugged in is useless. Specifically, you have to check the circuit of this lamp.

It is caused by the large capacity of the capacitor in the constant current source.

1. Replace the LED ceiling light. When replacing the LED ceiling lamp, take off the original rectifier and replace it with a new one, because the wick of the rectifier and the LED lamp is integrated, and the wick is fixed on the chassis, so that it is OK.

2. Replace incandescent lamps and energy-saving lamps. During the process of removing the bulb, do not touch the metal part of the bottom end of the bulb to prevent danger. When replacing the bulb, hold the part closest to the lamp port with your hand to prevent accidents during the disassembly process.

3. Replace the ceiling spotlights. There is a spring clip behind the ceiling spotlight, when dismantling, you should use your hands to clasp both sides of the lampshade and gently pull it down, so that the spring will be slowly extended, and the hand has been holding down the spring, and then release the spring after the disassembly is completed, so as to be careful of injury. The driver in the white square box is the driver, just connect the driver and the light with a black card, unplug the black card, and then you can install it.

4. Replace the LED tube and the fluorescent lamp of the first filial piety. Hold one section of the tube with your hand and push it to the other end with your hand so that you can remove this end, and then remove the other end in the same way. When installing, the installation of LED lights needs to pay attention to the identification of the positive and negative poles, remember not to install it in reverse.

5. Replace the U-shaped lamp. U-shaped lamps are widely used, but they are generally used in bedrooms and bathrooms, and the plugging and unplugging method is the simplest one. U-shaped lamps are divided into one-piece lamps and separately detachable lamps, and this is an all-in-one lamp.

6. Replace the energy-saving ceiling lamp. The shape of the energy-saving ceiling lamp can be said to be different, and there are all kinds of shapes, but the installation methods are different. After disassembling the lampshade, hold the basket part with your hand, pull it down vigorously, and insert it firmly when installing.