First, a few DON’T’s.

- Don’t clean your LCD screen with glass cleaner or other harsh chemicals, as they may damage the screen.

- Don’t press hard on an LCD screen. This can result in permanent damage to the screen or even cause streaks or dead pixels within the screen itself.

- Don’t use a dirty cloth to clean the screen, as it can cause streaks or scratches. Cleaning the Screen

When cleaning your laptop LCD screen, it is important not to use any harsh chemicals. Alcohol or ammonia-based cleaners, such as most glass cleaners, can have a chemical reaction with the LCD surface, causing permanent damage.

For best results, use a clean, lint-free rag and a mixture of 50% distilled water and 50% white vinegar. Distilled water is recommended because tap water may contain minerals and other impurities which could cause streaking. Once you have your mixture, apply a small amount directly to the rag. DO NOT spray the mixture at the screen. With the laptop turned off and the power disconnected, gently rub the screen in circular motions to remove any dust and streaks. Try to use the least amount of liquid necessary to get the screen clean. Allow a few minutes drying time and check for any leftover streaks, dirt, or dust. If necessary, apply a bit more liquid to the rag and repeat.

With a little care your laptop LCD screen will stay in great shape for many years. Cleaning a screen is both easy and inexpensive, and using the right materials will keep your laptop’s screen safe from damage.

1. Unplug the AC adapter and any other cables connected to the laptop and remove the battery to ensure that no power is going to the laptop. This will help reduce the risk of shock.

2. Locate the six rubber seals around the laptop’s screen and carefully pry them outward to remove them. Under the seals will be six screws. Remove these screws as well. Keep track of all screws and seals for reassembly.

3. Use a piece of plastic such as a credit card or a guitar pick to gently pry up the plastic bezel surrounding the screen. Start at a top corner and work your way across the top and then down the sides.

4. To remove the bottom of the bezel, make sure the screen is pushed back as far as it will go to allow the bezel to come out more easily. Be very careful as you slide the bottom of the bezel toward you and away from the screen.

5. Remove the four screws located near the hinges. These secure the LCD screen in place. Also remove the two cables connecting the screen to the inverter.

6. Separate the screen from the back of the laptop and pull it forward to access the back of the screen. Disconnect the video cable.

7. Remove the four screws securing the screen to the bracket on each side and carefully remove it.

8. Reverse these instructions for reassembly.

If you have gotten this far, simply replace the battery and connect the AC adapter. You can then power up the computer to test the new screen thoroughly and if there are any issues, check all the cable connections.

CCFL

At present, CCFLs are less expensive than LEDs. This makes them more suited for budget, or even mid-range, laptops and notebooks. With so many manufacturers competing for the lowest price, it is easy to see why CCFLs are still commonly used. Currently, CCFLs can sometimes use less power than LEDs, even though this is often thought not to be the case. The power usage depends greatly on the number of LEDs needed in a display, and improvements in LED technology should continue to provide improvements in power usage.

LED

The biggest advantage of LED backlighting is that it tends to produce a brighter, more even display. LED backlit displays can also be lighter and thinner than CCFL displays, making them more suited for portability, and allowing for thinner laptops and notebooks. Depending on the number of LEDs used, they can also reduce the power needed to light the display. Also, because LEDs light from the back, they are more suitable for use in glossy displays, which are becoming increasingly popular.

It is heavily debated whether LEDs offer better colors than CCFLs. Manufacturers who use primarily CCFLs claim they offer better color, but those who use LEDs also claim better color. Another issue is life span. Some claim LEDs have a longer life span than CCFLs, but this is mainly untested, as LED is a relatively new technology. Life span tends not to be a large factor; however, as most users will replace a laptop long before either technology is likely to wear out. One thing LED panels have and edge on CCFL panels is durability, the CCFL backlight is very susceptible to physical damage if it takes any impact, LED’s do not suffer from this vulnerability.

Despite the fact that CCFLs have some advantages, it is clear that LED backlights are the future for laptop and notebook panels. As the cost of LEDs begin to drop, we will see them used in more and more laptop designs, and more users can reap the benefits provided by LED backlighting.

LCD screen issues are very common since almost every laptop on the market utilizes this technology. The most susceptible computer to an LCD screen’s failure is the HP Pavilion. Hewlett Packard laptop users suffer dramatically from this situation, and often think that their entire computer is ruined. This belief is incorrect and far from the actual truth. The opportunity to repair a Pavilion laptop is absolutely available to people in need of repairs. Whether your LCD screen has gone entirely black or white, the need to buy a new computer is unnecessary.



Just because the screen shows no signs of visibility, it does not necessarily mean that your LCD has gone bad. One of the biggest misconceptions of a blank screen is that their LCD is completely dead, and will require changing. In all actuality the possibility of the video card failing is greater than that of the LCD going bad. HP Pavilion laptops are extremely durable in most situations and only require the changing of the screen when minor problems occur like a row or column of pixels has gone out. Some signs of LCD damage are more obvious than others, but in any case, it is no reason to dispose of the laptop and purchase a new one.

An inverter is the opposite of a rectifier converting DC current into AC current; static inverters are used in LCD technology and have no moving parts. After the current is inverted to AC, it can be used at any need voltage or frequency. The AC current allows the thin film transistor and components to present colors in the specified arrangement for the desired picture. The current is split after the inversion process to power each pixel or set of pixels in the display which are then altered and refracted to produce the picture again using AC current as power.

The inverter is one of the most important parts of an LCD display whether it is a TV or a laptop screen. Without the inverter no images or picture would be possible within the small case of a laptop. The inverter allows for smaller sizes and thicknesses of laptops and better screen resolutions as well as far more control over the picture itself. The inverter is how the screen allows the end user to specify color variances and adjustments. These adjustments take place at the electrical level and change the voltages that are applied to the screen to present better visibility and lower energy consumption. Without the inverter laptops would be far larger and less user friendly.

First locate the Allen screws along the sides of the LCD screen, there should be four, and remove them. Be sure to have the right sized Allen wrench as the screw can become stripped and unusable. It is recommended that a small plastic container be used to keep all of the screws in while performing the repair. After removing the Allen screws you need to remove the back plate on the screen. Starting at the bottom of the screen start to snap the plate off slowly and gently working your way up and around the assembly; this should be fairly easy and simple to take off. At this point tilt the LCD screen forward slightly and locate the frame screws along its sides.

If you have a Bluetooth or Wi-Fi antenna be sure to note their placement for reinstallation. Remove the screws from the framing carefully and set them aside in your plastic container. Loosen the tape holding the LCD tray into place and slowly separate the LCD screen, it will still be attached by a cable, and it is easiest of the screen is removed from the tray like you were opening a laptop. Disconnect the LCD cable from the screen and remove the tape securing the cable to the screen. Where the bottom of the LCD screen meets the casing there will be two small wires connecting the LCD to the laptop. Remove the small white plug from the assembly; these are the LCD inverter connections. Reverse these steps when installing the new LCD screen.

Around the edge of the screen are rubber covers, remove them to reveal the screws underneath; keep these in a small container so they are not lost. Remove all of the crews to be able to remove the plate off of the screen. Start at the bottom of the screen and gently pull from the inside of the screen in an outward motion and work your way around to the top. You may need to go around several times to be sure the frame is free of the screen assembly. Take this opportunity to spray the area with compressed air to clean out the exposed laptop components.

Directly under the screen you will find the LCD inverter attached to the laptop by a cable and screws. Pull the cable out using the metal portion, not the wire, and then remove the screws at the top of the inverter. Underneath the inverter is a piece of tape that will need to be removed, do so now. Remove the inverter and replace it with the new one. At this point you can connect the AC power and test to see if your screen works. Repeat the process in reverse to complete your project.