LCD Electronics – The Lifespan of Electronic Components Soldered into the Display Monitor & LCD Panel

Like all electronic components, the ones soldered into an LCD monitor screen too have an indicative lifespan. While components continue to function even after their rated lifespan is over, their performance degrades by over 50%.

• Under the normal operating conditions of temperature, humidity & handling LCD electronics have a lifespan of around 100,000 hrs (12 years). It's the same with the LED backlight as well.

• However, the CCFL backlight lasts 15,000 hrs before it loses 50% of its brightness.

• The EL (electroluminescent) backlight lasts about 10,000 hrs depending on the make, brand and quality.

As explained in the LCD electronics course, that EL is different from CCFL, which has a higher life span. Most modern LCD panels use CCFL backlight tube.

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LCD Monitor Repair – Full Electronics Course & Download Manual

LCD Backlight & Inverter – Connection Between the Backlight Tube & Power Board Inverter

• Backlight is a small cold cathode fluorescent lamp (CCFL) that's roughly 1/10th the size of a regular tubelight. It lights up the LCD screen from behind and can be found in everything from cell phones to monitors, laptops and digital watches.

• Inverter is the electronic power board that supplies electricity to the backlight. It has its own set of circuits & components that are part of the SMPS board.

Some of the most common problems that affect a LCD monitor can be pin-pointed to the backlight, inverter or capacitor. When your LCD monitor goes dark, the reason is usually a backlight bulb which needs to be replaced.

Understanding how electronic components function helps in locating the exact problem faster and with more accuracy.

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LCD Monitor Repair – Understand Electronic Components & Repair Techniques