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How to Repair an LCD Monitor
LCD monitors are easily the most popular kinds of display units in use today. Be it desktop or laptop, the ubiquitous LCD screen powers the monitors of a million systems worldwide.
But like any electronic device made up of diodes, ICs, transformers and circuit boards, there are some monitor parts that tend to fail more than others.
By this I don't mean they go bust at the drop of a hat, but compared to other parts like the LCD screen, power button or outer casing, certain internal components are more susceptible to failure than others.
In my own experience, these are the top 3 components most likely to need repairs:
1. Electrolytic Capacitors
Capacitors are at the top of this list for a reason. When it concerns monitor electronics, there are more capacitors on the various circuit boards than any other significant component.
Be it the display board, the power board, or the mainboard, all have those tiny capacitors that can bulge, ooze or simply go kaput due to a voltage surge.
One example is when you see dark horizontal lines across your LCD monitor screen and wonder how to repair it. This happens due to a defective filter capacitor in the monitor's power supply board. But the good news is capacitors are cheap to replace.
2. CCFL Backlight Bulb
This bulb is a cold cathode fluorescent lamp (CCFL lamp) that lights up your monitor from the rear. Think of it like a regular tube light, except about 10% that size.
While backlight bulbs are expected to last anywhere from 4-7 years, most bulbs lose around 50% of their brightness within 3-4 years.
You will know this when your screen becomes dim, dark or completely black. That's when the backlight has to replaced, but worry not, these bulbs too are relatively cheap. You can get them cheaply from online LCD parts stores.
3. Display Driver and Graphic Card
While the display driver isn't exactly an electronic component, it does drive another very important component called the graphic card (or video card).
Corrupted drivers, bad or incomplete installations, even incompatible drivers are very common causes of monitor display problems. The effects can be anything from discoloration, blank screen, strange rendering of 3D objects, or simply a signal failure.
Thankfully, these are among the simplest monitor problems to resolve, and even a lay person can do it. All you need is to completely uninstall all traces of your old display driver and run a registry cleaner to remove any remaining debris. Then run a fresh install from the manufacturer's site.
<a href=http://www.pcdriverhelper.com/Monitor.html">Repair LCD Monitor problems</a> by getting to the core of display electronics and graphic hardware. Super-charge your PC from inside and troubleshoot LCD monitor problems like a pro.
About the Author
For more information about <a href=http://www.pcdriverhelper.com/Monitor.html">how to update monitor drivers</a>.
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