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:
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:
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.
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