CCFL Backlight - The Weak Electronic Link in the Performance of a LCD Monitor

Though LCD backlight is expected to last 4-7 years without problems, some tubes start dimming as early as 1-2 years.

A number of factors contribute to backlight failure:

• voltage fluctuation & brownout
• cheap parts / fake parts / used parts 
• humidity & heat 
• (in rare cases) a quality or manufacturing defect

Since the CCFL backlight lights up the screen, losing it will cause the screen to dim, and hence, it is a weak electronic link in the overall usability of a LCD monitor.

Here are some facts about the LCD backlight bulb:

• A backlight is a thin fluorescent tube that lights up the LCD screen
• Most backlights are either EL (electroluminescent) or CCFL (cold cathode fluorescent lamp)
• A new backlight tube has a life span from 5,000-15,000 hours of usage before it loses 50% of its brightness.

Source Website

LCD Monitor Repair – How To Fix the CCFL Backlight & more

Acer LCD Monitor Problem – How To Repair Acer Monitor That Resets & Restarts

This is a problem with many LCD monitors, including Acer. When I turn it on, it shows the Acer logo but then resets and restarts without reason. I'm also unable to manually reset it, and the only option is to unplug it from the socket. How do you fix it?
 

• Monitor restarting is a problem with some 19" Acer LCD monitors (specially Acer AL1912 & Acer AL1916). The reason is corrosion on the circuit board that holds the buttons.

• You can fix this by removing the flat panel with the with 3 screws that hold the button board.

• Disconnect the tiny cable from the board and use a toothpick to clean between the solder connections where the ribbon cable plugs into button board.

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LCD Monitor Repair – Learn How To Fix Acer LCD Monitor Problems