Troubleshoot Laptop LCD Screen Video
In older laptops is the most common cause of poor cooling. Test air conditioning and see if that helps. Check the areas around the internal fan to see if there is an accumulation of dust fibers. A simple way to verify this, run the unit, feel the flow of air from the cooling system output (s) - the airflow is too low? If so, and the unit is at normal operating temperature, which can clog the internal cooling system partially.
Here are some tips and tricks for troubleshooting and solving problems portable video are. Video problems are very common in laptops and with the following tips you should be able to detect and remove the basic problems of portable video.
Laptop LCD screen has a faint image or is very dark
Look closely at the laptop LCD screen, and see if you can add on see a very faint image. If possible, then you may switch LCD laptop close lid in the closed position depends. In this mode, the backlight stays off, even with the LCD lid open. This is to save power when the notebook is closed with the lid. Check the LCD lid close switch. It is a small plastic pin hinges near rear LCD. Try to touch the lid switch a few times to see if it turns on the backlight of the screen. If that does not work, then I suggest to replace the FL inverter board.
Laptop LCD screen is solid white color or garbled
Connect an external monitor to the notebook. If the adds on firefox external monitor is fine, then you have a problem with the laptop LCD screen or the LCD cable connection. If the external monitor image is the same as the laptop LCD screen, then it is likely to be a failure of integrated onboard video should be, this means replacing the motherboard of the laptop.
A typical LCD assembly Laptop
This is a simplified explanation of the key components involved in a problem Laptop LCD Video Display
LCD connector: video data sent from the motherboard to the LCD. A video cable also feeds voltage to the FL inverter board LCD panel FL inverter PCB: This section converts the source of low voltage DC to high voltage AC, as required by the backlight bulb energy. If the FL inverter PCB is faulty, the LCD displays a very faint image on the laptop screen.
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