LED TV Backlight Use for 32inch TCL Le32hdf3010 LED Strips

A: 1. The relationship between the backlight board and the backlight strip: The LCD screen backlight system is mainly composed of the backlight tube and the backlight board. When these two parts fail, they are related. At present, LED technology is relatively mature, and its backlight system performance is very good, and the probability of problems is very low, but if there is a problem with the backlight system, it will be reflected on the output of the backlight board. 

2. Phenomenon of backlight tube damage: When the backlight tube is damaged, the phenomenon is: when it is just turned on, there is a light-emitting action, and after a while, it goes out. After it goes out, if you face the sunlight or light, you can see the image on it. The sound of the TV can also be heard normally. 

3. Solution to backlight tube failure 

At present, the general maintenance department does not have the technology to replace the backlight tube, so if a light is damaged, the overall brightness of the TV can be increased. Because there is a backlight board, when the brightness is high, it can cover up the impact caused by the damage of a small part of the lamp. It is basically imperceptible, but if there are many broken ones, the manufacturer needs to carry out special maintenance.

A: The backlight bar of LCD TV is usually composed of multiple LED lights, of which different types such as 4-wire, 6-wire or 8-wire are common. And measuring the voltage of LCD TV light bar can be done by the following steps: 

1. Prepare tools: multi-purpose meter, voltmeter pen, etc. 

2. Turn off the TV: First of all, make sure the LCD TV is off and disconnect it from the power supply to ensure safety. 

3. Find the power connection: Locate the power connector on the back of the TV, usually a slot for connecting a power cord. 

4. Connect the voltmeter: Connect the positive and negative terminals of the voltmeter to the positive and negative terminals of the power connector respectively to ensure a firm connection. 

5. Turn on the TV: Re-connect the power supply, turn on the TV switch, so that the LCD TV is in the on state. 

6. Measure the voltage: Use a voltmeter to record and measure the voltage of the light bar of the LCD TV. Depending on the model of the LCD TV, the voltage value may be between 12V and 24V, the specific value can be confirmed according to the voltmeter display. 

 

When measuring the voltage of the LCD TV light bar, you need to pay attention to the following matters: 

- Ensure safe operation: the connection between the TV and the power supply should be disconnected to avoid the danger of electric shock. Meanwhile, be careful and gentle when operating to avoid damaging the TV or voltmeter. 

- Connect the voltmeter correctly: Make sure the positive and negative terminals of the voltmeter are correctly connected to the positive and negative terminals of the power connector, otherwise it may lead to wrong readings. 

- Pay attention to the voltage range: Different types of LCD TV light bars may require different voltages, so make sure the range of the voltmeter can cover the voltage range when measuring to avoid inaccurate readings.

A: LED lamp beads are connected in series, the possibility of a total bad almost zero, as long as there is a lamp to bead damage will cause constant current board protection or a set of light bar does not light up, LED light bar and home LED lamps the same hundred is a life expectancy, the service life of even if a bad one or one must be a full set of light bar all change, otherwise the repair of the light bar to make use of the time with the time is not long and the other did not change the bar will be bad!

A: LCD TV backlight strip repair method The backlight bar is an important part of the LCD TV, if there is a failure, you need to repair it in time. The following are some common LCD TV backlight strip repair methods: 

 Method 1: Check the power supply First, determine whether the power supply of the TV is normal. Check whether the power cord is plugged in tightly and whether the socket is energized. If there is no problem with the power supply, you can further check whether the power board of the TV is normal. 

 Method 2: Check the backlight If the power supply is normal but the TV screen does not show anything, it is likely that the backlight is malfunctioning. You can try the following methods to check if the backlight is working properly: 

1. Dim the room, turn on the TV and observe if the screen has a faint backlight. 

2. Use a flashlight to shine on the TV screen and observe if an image is displayed. 

3. Check if the backlight strip is damaged or broken. 

4. If the backlight strip is faulty, you need to replace it with a new one. 

 Method 3: Call a repair professional If you don't have relevant repair experience, or the above methods can't solve the problem, it is recommended to ask a professional TV repairer to overhaul and repair.