Laptop LCDs rarely have problems and will likely be the last part of the laptop to fail. However when they do, there can be a number of failure options. Some include damage to the screen by cracking, failure to light up at all or backlight problems. The first two problems can be repaired by either replacing the screen entirely or if this is not option, having the laptop replaced directly from the manufacturer.
Backlights problems can usually be rectified by a service engineer or a technician. In most cases, the backlight may fail due to the lamp burning up as a result of old age. Replacing is obviously the cheaper option to having to buy a new laptop or having the entire screen replaced. Thus consider taking the laptop to a nearby technician who deals in laptop repairs.
Just like fluorescent bulbs, LCD backlights are not made in a way that they can be replaced easily. However, experienced technicians are able to bypass this seemingly great hurdle and open up the laptop and have it running with a new backlight, good as new. To an untrained eye, it seems more logical to throw away the laptop and buy a new one. However, it is possible, with a few assembly tools found in a PC workshop to have the laptop up and running again. The technicians are qualified to know the size of the required lamp and also avoid the high voltage backlight wires which in some cases are exposed since the manufacturers do to encourage opening up the screen.
Armed with the following knowledge and the necessary tools, the screen can be opened up and repaired. Other problems will also demand opening up the screen and taking a closer look at the components. If your LCD screen seems to be having a problem, consider a visit to a technician and have it checked.