How to judge whether the laptop screen touch is broken？
The first false black screen is not necessarily the problem of the lamp.
Second, if it is determined that the lamp tube is faulty, it can be replaced. If the lamp tube is broken, the screen is not bright instead of not showing. Although it looks like a black screen, the image displayed on the screen can be seen faintly when the screen is illuminated by strong light. This is because the LCD screen itself is still working, but there is no backlight to illuminate it; If the LCD screen itself is broken, the backlight should still be able to light up normally, which can be clearly seen.
How to judge whether the laptop screen touch is broken？
How to determine whether the screen is broken or the wiring problem?
The display screen of the notebook computer is broken or the flat cable is broken, which can be determined according to the following methods:
1. Generally, the characteristics of computer screen failure are: not bright, bright with spots or bright lines. Strictly speaking, most of the flat cable failure is due to display problems. It may be because the flat cable is not inserted tightly or some part of it. Generally, the characteristics are: unstable display, sometimes not displayed, or sometimes the display icon is deformed or the display screen is jumping, maybe black screen.
2. Exchange test method: use a good display screen or a good wire to cross test to determine whether the screen is broken or the wire is broken.
3. External display: connect the notebook computer with an external display. If it is normal, it should be a screen problem. If it is not, it should be a wiring problem.
4. Screen rotation angle: if the screen rotation angle is different, some angles are spent, and some are not spent, it may be a problem of wiring, and the screen is unlikely to be damaged.
How to judge whether the laptop screen touch is broken？
How to determine whether the screen wire is broken or the screen is broken?
The display screen of the notebook computer is broken or the flat cable is broken, which can be determined according to the following methods:
1. Generally, the characteristics of computer screen failure are: not bright, bright with spots or bright lines. Strictly speaking, most of the flat cable failure is due to display problems. It may be because the flat cable is not inserted tightly or some part of it. Generally, the characteristics are: unstable display, sometimes not displayed, or sometimes the display icon is deformed or the display screen is jumping, maybe black screen.
2. Exchange test method: use a good display screen or a good wire to cross test to determine whether the screen is broken or the wire is broken.
3. External display: connect the notebook computer with an external display. If it is normal, it should be a screen problem. If it is not, it should be a wiring problem.
4. Screen rotation angle: if the screen rotation angle is different, some angles are spent, and some are not spent, it may be a problem of wiring, and the screen is unlikely to be damaged.
How to judge whether the laptop screen touch is broken？
The laptop monitor is not lit, what is the reason for the normal operation of the host?
If the display is not lit, first eliminate the hardware reason. Step 1: find a desktop monitor or TV, connect the computer with VGA or HDMI output cable, and then restart the computer. At this time, the external display should be able to display the startup information normally, otherwise the computer is broken, and the host cannot operate normally. Step 2: After entering the system, if the display does not display, press the Fn+switch key, and try more times, Let’s see if we can turn on the laptop display. Step 3: Clean the periphery of the display and wipe it. Now the laptop is magnetically induced to turn off the screen. Maybe it is interfered by magnets such as audio. If the old laptop has a protruding small pillar that is pressed, it will also turn off the display. Finally, if the above cannot be solved, it is estimated that the hardware output of the laptop display is faulty, so send it for repair,