The light source in the LCD monitor are special lamps positioned inside the matrix behind the LCD panel, known mainly by the name lamp for monitor or lamp for backlighting . The technical name for these lamps is CCFL (Cold Cathode Fluorescent Lamp) - fluorescent lamp with cold cathode.
All CCFL lamps for backlighting have a fixed resource that manufacturers give as hours in a regime of operation
A sign for leakage of the resource of the lamps is lower brightness and reddish coloration of the image as it is highly expressed in the corners of the screen. When you remark these signs you should look for a service for repair of monitors because the exhausted lamps overload the power inverter and the likelihood of damage is very large, in which case the repair will become unnecessarily more expensive .
In the monitors usually there are built-in four lamps for backlighting and often happens one of them to burn out, which leads to passage of the inverter in a protection mode - all the lights turn off and the screen is dark.
All lamps for backlighting are mounted in the liquid crystal matrix and to be replaced, it is necessary an entire disassembly of the matrix. Therefore, the replacement of the lamp for backlighting is one of the most complex operations in the repair of monitors.
For replacing the CCFL lamp,in the cases when it can not be found an original lamp for backlighting, is selected from the available on the market corresponding on the basic parameters analogue.
An attempt for replacing the lamp for backlighting at home or by unqualified professionals often leads to an expensive subsequent repair, and sometimes to necessity for replacement of the display matrix.
