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.