The Technology Behind Lcd Monitors & Solutions To Common Faults
This is not science project, but we would love to dissect the guts of lcd monitors for your benefit
. You will hardly come across problems with lcd monitors, but suppose your monitor starts acting funny you would be greatly benefitted by knowing what is wrong inside. Of course there are mechanics and scores of technicians all across town, but it never hurts to know what they are doing to make sure you are not ripped of your hard earned money. So here you go, below is everything that you need to know about lcd monitors.
The Basic Technology
Let us begin with the technology. LCD or liquid crystal displays have been around for some time now. It was in 1983 that Casio, the Japanese giant made the first LCD television. Prior to this there were several tries but the technology was not polished enough for televisions which required a faster refresh rate.
LCDs work on the principle of liquid crystal.
LCD TV monitor have a couple of glass or plastic sheets with liquid crystal embedded between them. This basically reacts to heat and electric charges which is provided by a matrix of cost effective transistors. The voltage in each of these transistors can be individually regulated to fire up the three principal colours which are red, green and blue respectively. Modern LCD monitors have evolved thanks to a huge impetus on R&D by all manufacturers, but the basic concept remains the same: there are a couple of glass sheets, a liquid crystal in between them and some sort control mechanism applied to regulate the light flowing through each crystal.
Common Technological Glitches
We all love when our LCD monitors keep working fine, but the moment something goes wrong all hell breaks loose. A simple repair will set you back by a significant amount. When the problem becomes chronic, you tend to waste more money on repairs. Some of these problems are actually terminal, so when you face them, you better exchange the old bugger for something new and modern.
LCD TV price have lowered significantly over the last few years, thus we think its better to buy a new monitor instead of wasting money on repairs. For the rest, a technician is all you need.
The only issue with technicians is that they keep looking for opportunities to earn more money! Therefore, you will be able to negotiate better on the repair prices if you know what went wrong with you monitor.
Permanently Dead Pixels
This is a big problems if you have a lot of dead pixels on your screen. A few here and there is tolerable if you are not a graphics designer or someone who has to work extensively with monitors. No fix exists for this problem, which means, you will have to buy new lcd monitors. Do not call a technician for this, he will open the back and charge you money for nothing.
Broken Backlight
Another major problem with lcd monitors is a broken backlight. LCDs do not work without a backlight because LCDs transmit light, they do not produce it. At the beginning, the light takes some time to reach full operational capability, transiting from darker shades to achieve full brightness, but gradually, the backlight unit fails entirely and there is no way you can replace it.
Thus, if the light goes kaput you might need a replacement. Again, no use calling a repairman for this.
Unreadable Texts and Hazy Images
This is common with first time use of lcd monitors. Things on the screen are too hazy to read or view because of some mismatch.
LCD TVs are tuned to factory settings, which might not be the best for your use. If you are using the Microsoft Windows operating system, you can make texts clearer by following steps:
1. Press the Windows key on your keyboard
2. Type: cleartype on the search area, press enter
3. Select Adjust ClearType Text
4. Select Turn on ClearType
5. Continue clicking Next till the last page
6. Click Finish on the last page
7. Type in Administrator password if prompted
For the pictures, you must find the manuals that came the monitor and set the Contrast and Brightness levels to a better setting.
All One Color
This is a very rare problem that most modern lcd monitors do not have. The reason is a faulty cable that runs from the CPU to the monitor on the backside of the monitor. Try fixing it by removing the cable and fixing it back again. If that does not work, you may have to try a new cable or call the technician. When the technician arrives let him know that you think it is the cable at the back. This way they will be careful not to underestimate or cheat you!
Horizontal or Vertical Lines
If you see such lines on lcd monitors, know that the time has come to change the monitor entirely. Lines appear because of major technical faults that cannot be repaired, thus you may consult technicians, but we do not think that will help you in resolving the issue.
We hope this helps you in getting lcd monitors fixed. Also, remember to consult authorized technicians to ensure that you are getting bona fide service.
by: Akshita Verma
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