Xiamen 32 inch LCD TV flash screen, Xiamen LCD TV flash screen problem

It should be that the LCD screen backlight is broken, and the general maintenance will give you a direct replacement of the LCD panel, which costs a relatively high amount, more than 2000, but you can also replace the backlight, only about 200 to 300.

Problem: There is a problem with the backlight behind the LCD screen, or it may be a problem with the LCD screen. From what you've said, it's a big problem.

It's been three years, and it's not easy to do it, so you first give the national free service**call**4008885666 Xiahua headquarters Tell me your problem, and she will tell you the solution.

If the maintenance cost is high, I personally recommend not repairing it, disposing of it, or adding some money to buy a new one, and now the 32-inch one is less than 3,000 yuan!

If the use time is more than 5000 hours, it should be a problem with the backlight system, specifically the small lamp tube of the backlight system is aging, if the flash is just the picture dimming instead of flashing like a completely black screen, then there may be one or two lamps that are good (but not far from bad), find a good master to replace the lamp.

The backlight of the LCD screen is broken, or the backlight board embedded in the back of the LCD screen is broken, or the power board is broken. First see if there is a problem with the power board, and then check the backlight board of the LCD screen, and in the end, there is no problem, but the backlight is bad, which generally needs to replace the entire LCD screen. However, most of the problems in Xiahua's machines are caused by broken power strips.

Summary. The possibility of flickering screen problem in Xiamen LCD TV is:

First, it is a problem with the screen, and the backlight system is faulty;

Second, it is a problem with the motherboard, and the work is unstable. Pay close attention to maintenance during the warranty period.

Xiamen LCD TV flicker screen problem.

The possibility of flickering screen problem in Xiadong Xianhua LCD TV is: first, it is a problem with the screen, and the backlight system is faulty; Second, it is a problem with the motherboard, and the work is unstable. Repair should be carried out during the warranty period.

The poor stability of the drive circuit of the TV will also lead to the problem of the TV flickering screen.

Hope mine is helpful to you<>

1. Check whether the TV is connected to the power supply, see if the indicator light of the TV is on, you can judge whether it has been powered on, if it is not powered on, turn on the power supply of the TV, and turn on the power switch of the TV;

2. If the indicator light is on and the TV screen is black, it may be that the TV is in standby mode, and you can press the standby button of the remote control or the channel + - button on the fuselage to wake up the TV;

3. If the above methods still can't be solved, it can basically be judged as a hardware failure of the TV, such as a switch circuit failure, a power supply crack, a fault of the electric system, a failure of the motherboard or other components, etc., it is recommended to overhaul it after the service.

The problem of the machine itself and the analog signal cannot be solved. If you're a CRT TV, there's no one that doesn't flicker; If you're on an LCD TV, you're definitely not connected to a digital signal. If the built-in menu of the TV has a refresh rate adjustment,120It will not flash above (generally the minimum LCD is120),TVs with this function are all replacement products when they just came out of LCD。

When asking a question, you need to explain what type of screen and what type of power board.

1. Check whether the TV is connected to the power supply, see if the indicator light of the TV is on, you can judge whether it has been powered on, if it is not powered on, turn on the power supply of the TV, and turn on the power switch of the TV;

2. If the indicator light is on and the TV screen is black, it may be that the TV is in standby, and you can press the standby button of the remote control or the channel + - button on the fuselage to wake up the TV;

3. If the above methods still can't be solved, it can basically be judged as a TV hardware failure, such as a switch circuit failure, a power supply system failure, a motherboard or other component failure, etc., it is recommended to contact the after-sales service for maintenance.

First of all, you have to determine whether there is a power indicator when you turn on the machine,Next, there is no image and sound when you turn on the machine,It may be a problem with the TV system software,Call**Contact after-sales service,Just help you re-debug it。

Call ** for repair, this black screen can be broken in everything, and the motherboard power board backlight board screen is possible.

The reasons for the flickering screen of the LCD TV are as follows:

1. It may be that there is a problem with the backlight part of the screen and it should be sent for repair.

2. It may be a problem with the resolution setting, re-set it according to the manual, the general method: right-click on the blank point on the desktop, properties, settings, advanced, monitor. 70 to 75 Hz.

3. It may be caused by loose contact of the signal line, reconnect it.

4. It may be that there is a problem with the wire rod and replace it.

5. Try to use DVI and HDVI (digital signal) interfaces, and it may be better not to use VGA (analog signal) interfaces.

6. It may be a signal quality problem of the TV station, try it on another station.

Let me tell you a way to tell: you press the image to a static state and observe the image: if the light is flashing, it means that there is a problem with the backlight driver circuit or backlight tube, and if the light is not flashing, it is a problem with the motherboard or logic board or LVDS cable.

I am an expert in electrical appliance sales and maintenance!

Your failure,Several possibilities will occur,You should find a Hisense master for diagnosis。

All of these questions are possible.

First, this fault is likely to be a problem with the power factor correction circuit of the switching power supply, or it may be a problem with the backlight drive circuit, which can be known after measurement, so the above problems are checked as follows:

First of all, measure whether the 300V voltage after rectification filtering is normal.

Measure whether the 380V 400 voltage at the output end of the power factor correction circuit is normal and stable.

After the above check to restore the power supply circuit to normal, if the power-on test machine is not working, then measure whether the voltage of each pin of the backlight drive control chip to the ground is normal, if there is any abnormality, check the components around the abnormal pins of the chip.

Hello this friend! If the LCD TV high-voltage board [that is, the after-sales backlight plate told you] is damaged, buy a new one in the electronic city is only a few dozen dollars If your LCD TV is overwarranted, the after-sales maintenance fee should be more than this money, Ha It is estimated that they will have to charge you additional maintenance fees!

Dozens of dollars! It's called the high-voltage plate for lighting the tube.