If your laptop screen has suddenly gone very dim and you have tried and tried to alter the brightness with no joy, the cause of this failure is nothing to do with the laptop screen itself, it is a separate part which my have broken. The part in question is called an ‘inverter’. The inverter was used in slightly older laptops that were produced up to a year or so ago. They are found in those laptops which have a CCFL backlight screen. The more modern LED screens do away with this inverter due to the improved technology.
The inverters’ job is to change the power that goes to the laptop screen. This altering power allows the Liquid Crystals within the screen to illuminate in different colours, producing the image you see on the display. When the inverter breaks, the result is a black or very dim screen. The liquid crystals within the display panel are not receiving any power to illuminate them and therefore your screen has no light. These parts can be replaced very easily however and are widely available
This entry was posted on Tuesday, June 21st, 2011 at 7:32 am. You can follow any responses to this entry through the RSS feed.