Like most computer problems, a laptop screen repair is diagnosed by a process of elimination. The laptop screen consists of 5 major components:
- Laptop LCD or LED screen
- Backlight
- Flex cable
- Inverter
- Motherboard
Sometimes, the cause of the problem is apparent when the laptop screen is broken due to physical trauma.
On the other hand, the source of the problem is not so clear (as it is when the screen is dimmed). In this article, we will do the troubleshooting steps of laptop screen repair.
Laptop Screen Repair Troubleshooting:
The first step is to confirm that the laptop screen we are repairing, not a power failure or other laptop problem.
Ensure that the laptop is working properly. If the laptop screen display is correct and there is no physical damage and you can hear the boot sound while booting into Windows, then you have established that the rest of the machine is working fine.
Alternatively, if the screen is broken and you only see cracks, ink spots, and lines, then you will have to plug the laptop into an external display (a desktop screen).
If the external display is showing the correct performance of the boot-up process, then understand that the laptop screen is the issue.
If the external display is not showing the correct performance of the boot-up process, but you can hear the laptop turning on properly (normal beep, fan spinning, hard drive spinning) then you will need to confirm that the external monitor works. Has been doing. If so, there is a motherboard problem that will not be solved by changing the screen.
If the screen is not broken but has plugged the laptop into the external display and noticed that it is booting properly, then the time has come to identify the main problem.
If the screen is only black or dark, use a flashlight to illuminate the screen around the top left corner or center.
If you can see the display with the help of a flashlight, then we know that the screen is receiving data properly, but there is no rear light.
This will be either an inverter problem or a backlight signals problem.
If the inverter is bad, you have to replace it with a new one.
If the inverter is working, it is strongly recommended to replace the laptop screen instead of trying to fix the backlight. That repair is dangerous and requires expertise.
If the laptop screen is not dim, but there is no display on the laptop (but is on an external monitor), then it is time to try replacing the laptop screen.
Most laptop screen repairs are caused by damaged screens or backlights.
However, you can also experience situations where random dots appear on the screen, vertical or horizontal lines appear across the screen, an increasing discoloration of an area is present. A type of stain is developing.
In all these cases, you have to compare the display of the laptop to the external display. If the external display does not recreate those issues, then you should replace the laptop screen.
Laptop screen repair is a delicate operation. While it is possible to “do it yourself”, keep in mind that you will be dealing with very fragile parts and plastics, small screws, the possibility of further damage to the unit and ultimately the cancellation of your warranty.
We strongly recommend hiring a professional shop for laptop screen repair as the cost difference is usually worth the peace of mind and warranty on repairs.
