There cannot be any doubt that in the modern days a laptop happens to be essential both for students and working individuals. It is due to its portability, users are able to write important papers, connect to the Internet via wireless modems, and can even watch movies anytime and anywhere. Now, since there is the absence of any paper there is the need of proper care. However, if there is the absence of any proper care, this machine can break down, and especially, there can be problems with the LCD monitor. In this respect, it can be said, that there is a popular notion that it is better to go for repairing the LCD parts in the place of making a strive to replace them. What can be the possible reasons behind this? Well, the reasons are manifold. It is true, that the both the monitors and terminals last over ten years. However, in the case of LCD screens, the lifetime is even longer. The malfunctioning of a tiny part can make a monitor redundant. If the main transformer or the tube fails, then replacing the entire TV is logical. If not, then repair is the cost-effective alternative. Terminals and monitors hold heavy metals that are potentially dangerous, so repairing is also a more environmental friendly thing to do. And, most importantly, repairing costs a lot less than the purchase of a new electronic component. In this day and age, there is a great availability of highly competent, anti-reflection polarizer films in the market. Now when this polarizer film is applied to the LCD screen increases display contrast as well as readability. Images become sharper and clearer; the screen for the sake of providing deeper colors, it is found that it allows for a wider viewing angle in bright settings; and as a result protects LCD panels from scratches and fingerprints. Besides, the flat panel in the LCD television makeup is the most very expensive item to replace. In fact there is indeed the presence of several cases, when there is a fair chance that it could exceed the cost of the total unit. Split or broken LCD panels obviously need replacement. Another sigh of a flawed panel are lines running the length of the panel. Still, three quarters of such panels can be repaired.
But if there is any such great crisis how to move in that respect! For instance you want to move forward in this respect. How? For your benefit we have included in the following some tips or guideline, that may help you in the long run in troubleshooting the LCD monitor of your laptop.
Is there something wrong with your screen? If this is so, then there is a possibility that the LCD (liquid crystal display) backlight of your laptop is broken. The LCD backlight is the source of light that gives you a clearer visual of your screen. Symptoms of LCD damage include:
- Dim laptop LCD
- Flickering screen
- Faint images on your LCD
- No video image
- Faded laptop LCD
A laptop backlight is composed of four parts and these are:
- Laptop inverter
- LCD lamp
- Inverter cable
- Toggle switch
Damage to any of these parts may result to the symptoms stated above. Unfortunately, there is no other way to be sure if one of these parts is damaged without using a tester. Some of the main causes of damage to these parts include age and excessive use of your laptop. Parts such as the LCD lamp usually last for two years minimum.
Aside from the blacklight, it is possible that your LCD screen itself is damaged. This problem can be very serious because the LCD is the most fragile and expensive part of your laptop. Symptoms of LCD damage include:
- Decolorization of your screen
- Appearance of stripes or lines on your screen
LCD damage is usually caused by hard impacts to your laptop. Remember, the LCD is a very sensitive and fragile piece of equipment. Even the slightest amount of pressure on your LCD can cause it to break.
The only way to repair the backlight and the LCD monitor is to replace them. The replacement of the LCD monitor by us alone can cost you a handsome amount of money and that is apart from the general fee that most laptop repair companies charge.
Now if you do want to repair the CMV 19" LCD Monitor problems model CM-922D there is the requirement of different aspects. In this regard we can say that some months before a similar problem did come from a client who complained of the absence of any power. It was found that this LCD Monitor power supply was not built into the circuit. Thus, there was a good need of an external power adapter for the sake of powering it up. The input to the LCD Monitor was 19V with 3.1 Amp from the adapter. Bu since the complain was regarding the absence of any power the need was therefore for us to test it out to check if the power adapter had been at fault or the LCD Monitor. Through a considerable process of testing it came to the knowledge that the AC supply was plugged in to the power adapter and it was perceived that the power LED was lighted up. Through a concentrated checking of the output voltage of the power adapter 19 volts was found that was comfortably good. Even though the LED has lit and correct output voltage, this didn't mean that the power adapter cold maintain when there was a load (the LCD Monitor) connected to it. In this respect it can babe said that once we came across a Compaq 17" LCD Monitor that was having a specific output voltage from the power adapter but when connected to the Monitor, the display appeared for a fraction of a second before shutting down. Usually in this case, the experiences do confirm that it could be the inverter circuit which was faulty if not the lamps had a perennial problem. What was the real cause then? You would be surprised that the actual cause of the LCD Monitor shutdown was due to the power adapter. The power adapter could not sustain the output voltage if ever there was a load on it.
Now, this kind of fault was more often than not due to the presence of a bad filter capacitors located at the output of the secondary circuit. Now if there was any such ESR meter, it would have been possible for you to locate in point of fact the defective electrolytic capacitors fast. Now if the same problem happens with you and you don't have the meter, you will just have to direct replace the caps. In addition, for the sake of confirming if the power adapter is truly working or not there is the need of a light bulb to act as a load. But at the same time you shall have to be confident that the power LED light doesn't blink whenever the light bulb is connected. Even if it blinks one time, it will directly point towards that the regulation is not good and there is a need to check completely and in the best manner. However, in the above china made LCD Monitor, the power adapter work perfectly fine.
Now, with the confirmation of the good condition of the power adapter, the next center of attention was on the LCD boards. The process of the removal of this LCD Monitor cover was indeed very easy and you can even easily get access to the board when the metal casing was removed. The first thing that was checked happened to be the SMD fuse that had its location in the main board. Now with the opening of the fuse there would be no supply to the ADC/SCALAR and the CPU IC thus the power LED would not light! Checking this SMD fuse was rather simple as the method of checking it is the same like a normal fuse. Use either an analog or a digital meter set to ohms range or continuity check. You can check the fuse while it is still in circuit. In the same manner the fuse was found to be open circuit.
Now there is one question that needs to be answered by us. What makes the fuse to go open circuit? Well from what we have known about electronic repair, there is the presence of three possibilities as why a fuse opens circuit. The first reason can be that the fuse is able to become open circuit for the sake of its lifespan. It is true that there are some fuses that do remain intact for many years at a stretch while there are many who do exist for only couple of years. In other words, the basic existence of a fuse does depend on the qualities of the materials used. Secondly, the external factor such as a surge causing the fuse to open circuit in order to protect the main board. The third and final reason can be that the main board itself have problem that caused the fuse to open circuit.
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Attention:
Fast Laptop Repair |
Common
Problems:
Not
Booting
CPU BAD
Inverter
Keyboard/ Mouse Broken
Power Not Working Properly
Droped Laptop
Damaged LCD / Screen
Bad AC/Adapter
Memory issues
Dead Hard drive
Hinge Repair
Motherboard / System Board Issues
Spyware Problems
Spill Water
Slowing Down
Hard Drive Issues
Overheating
DC Jack Broken
Touchpad
System Restore
Virus
Data Recovery
Bios Problems
Drivers not working
Power Problems, loose connections.
CDRW , DVD and CD-Rom Problems
Service many laptop brands:
| Acer Alcam Alienware AMAX AMS Apple Arm AshtonDigital AST Asus Averatec ChemUSA Clevo Compal Compaq CompUSA CTX Cybermax Dell Digital Dual ECS Emachines EPS Flexbook Fosa Fujitsu Futurecast Gateway Gigatech Hitachi HP Hyperdata IBM |
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