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Homepage > Common Problems With Laptops & Some Solutions - Liquid Spills, Cooling, Power & LCD Display Screen

Common Problems With Laptops & Some Solutions - Liquid Spills, Cooling, Power & LCD Display Screen

12/04/2011 16:02

Fixing Common Laptop Problems

Liquid Spills on Laptop

I have repaired many Laptops in contact with accidental liquid spills. It is a recoverable condition in most cases. It is most important to respond to the tidying up process as soon as possible (before corrosion or internal soakage occur)! Liquid intrusion could cause the following types of laptop damage:

Short circuit resulting from conductive nature of wet liquid (problem may clear as liquid dries) Short circuit resulting from dried liquid residue Corrosion occurs (particularly volatile by incorporating acidic soft drinks - Coke) Electronic components damaged by above short circuits Possible Solution: Immediately each time a spill occurs, shut down the laptop, invert a laptop and leave the unit inverted (drainage) for at least 20-30 minutes. Then, remove any attached leads, eliminate the power unit and battery, and invite the unit to air-dry overnight.

To remove any liquid residual: Have someone remove the keyboard assembly and perform additional cleaning. It could help to use cotton buds and sterilized water to remove any contamination. Where corrosive adverse reactions may be suspected (with coke), gently rub any suspect areas which has a cotton bud dampened with CRC or WD-40. Dry the treated areas making sure that only a light film from the WD-40 anti-corrosive solution remains. While the keyboard is removed, use a bright light and magnifying lens to examine areas where the liquid made contact.

Laptop randomly turns off

This is normally due to:

AC power adaptor sensing an overload of power drain Overheating processor as a result of build of internal dust (clogged fan) AC power adaptor incapable of sustain normal power needs (faulty power adaptor) Battery overheating, resulting from internal battery fault, or charging levels Intermittent short circuit or open connection (check condition of power leads)

On older Laptops, the most common reason is poor cooling. Try going somewhere air-conditioned and see if that helps. Inspect other locations near the internal cooling fan; check if there is a build up of dust fibres. Easy way to check this; with the unit running, notice the flow of air in the cooling outlet(s) - would be the airflow very low? If yes, and the unit is at normal operation temperature, this could indicate the internal cooling system is partially clogged.

Troubleshoot Laptop LCD Video Display problems

Here couple of tips and tricks for troubleshooting and fixing laptop video problems. Video issues are certainly common within portable computers along with the following tips you should be in the position to detect and eliminate basic laptop video problems.

Laptop LCD screen has a faint image or perhaps very dark

Look closely in the laptops LCD screen, and see if you can see a very faint image. If you can then it is possible that the Laptop's LCD lid close switch is stuck while in the closed position. Within this mode the backlight stays off, in spite of the LCD lid open. This can be to conserve power when the laptop is Up for the LID closed. Look into the LCD lid close switch. It's a small plastic pin located close to the back LCD hinges. Try tapping the lid switch a few times to see if you can first turn on the screen backlight. In the event it does not help, next, i would suggest to replace the FL inverter board.

Laptop LCD screen is solid white colour or garbled

Connect an external computer monitor towards the laptop. If the external monitor display is okay, then you have a problem with laptops LCD screen or maybe the LCD cable connection. In the event the external monitor image is equivalent to on the Laptop LCD, then it is likely to be a faulty integrated onboard video, meaning replacing the motherboard from the Laptop.

A typical Laptop Liquid crystal display assembly

This is a simplified explanation from the basic components which can be involved on a Laptop LCD video display problem:

LCD Connector: Video stats are sent from the motherboard to the LCD screen. A video cable also feeds voltage towards the FL inverter board about the LCD panel FL inverter PCB: This section converts the low voltage DC source to high voltage AC, as essential to energise the backlight bulb. In the event the FL inverter PCB is faulty, the LCD screen can have a very dim image about the Laptop display screen CCFL (backlight bulb): When the backlight bulb is working, you can view the image on the LCD screen. By incorporating Laptops, the backlight bulb is usually a part of the LCD screen assembly and desires to be replaced with a complete LCD screen assembly. It entails a specialized Laptop repair workshop to switch the backlight bulb Laptop Lid close switch: This switch is usually a small switch (mechanical or magnetic) which is located close to the rear display hinges. Most laptops will either hibernate or are employed standby mode when the LCD is closed. This is achieved by interfacing with the Laptop's BIOS power management software. Subsequently this is linked to the Windows based pc Laptop is slow and continually shows Internet popup's

The Laptop is extremely likely infected with spyware. Spyware is software that hides on your hard disk and attempts to collect details about your activity over the internet. Spyware is sometimes utilized in your computer when you download 'unknown' free software or when you backlink to free music Internet programs (KaZaA, Limewire, BearShare, etc). Routine to remove and further prevent spyware is by using Spybot. Please read my Spyware Software Help Page.

Laptop is frozen, no solution to keyboard or mouse, cannot Shutdown

With most Laptops I know of that this will happen from time to time! The easy method to solve this concern is:

Disconnect a laptop power cord Remove the battery in the laptop Wait a few moments (10 seconds) Replace laptops battery into the unit Reconnect laptops Power cord Turn laptops on

The Laptop begins normally and be fully operational. If you've been working on a Microsoft Word or Excel document during the problem, then you may realize that the data has been auto-recovered for you. In this case, you will be automatically prompted to watch the last document you worked on when you open the Microsoft program.

Troubleshoot Laptop Hibernate and Standby problems

Power management options on laptops sometimes to cause problems. Hibernate and Standby modes are power saving modes of operations to battery powered laptops.

Hibernation is usually a procedure by which the running state (contents) of the work is stored to disk until the computer goes into hibernation or standby. When the Laptop is woken up, you are restored to the exact placed you were before. Standby and Hibernation use a low power consumption mode, with sufficient power to preserve the information of such memory. This means that Laptop computer can get up without a full restart and loss in work.

Laptop does not get up from Standby or Hibernation

Here are my tested suggestions:

Perform time - some older Laptops will take up to 30 seconds to get up - fully Some Laptops have special keys or buttons for 'Wake Up' - look at the manual Press and retain the Laptops power button for five seconds or more. Some Laptops are configured to Suspend or Hibernate which has a press of the power button. Holding the ability button for 5+ seconds will often reset and reboot laptops As a last resort, eliminate the laptop battery along with the power cord, wait Half a minute, replace the batteries and reconnect the ability cord

Now that the Laptop is operational, you should research the underlying problem. Typically, such problems arise originating from a disagreement either involving the power management highlights of the Laptops BIOS and Windows.

A conflict using the Laptops BIOS power management and Windows power management is the most common cause of such wake-up failure. Try different settings while in the BIOS to see if that might solve the trouble. Look to see if the Laptops BIOS is configured to suspend the computer, and how it compares using the value configured in Windows. Normally let Windows control the ability management.

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