How to Replace an NEC 1830 Monitor Backlight
The backlight in an NEC monitor powers the LCD screen. This backlight connects to an inverter board, which then connects to the power source of the monitor. If the screen on your NEC is dim or dark chances are that the backlight is burned out. If this is the case, open up the monitor and replace it on your own.
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Instructions
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1
Turn off your NEC monitor and unplug it from its power source and the computer. Place it face down on a sturdy surface such as a desk or table.
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2
Remove all screws from the rear of the unit with the screwdriver.
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3
Remove the rear panel from the unit. The inverter and main circuit board will be visible on top of the screen.
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4
Unplug all the cables from the top of the main circuit board located in the middle of the unit. The rectangular inverter board is located next to the main circuit board. Unplug all the cables from the top of this board as well. Make a note of which cables go where.
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5
Remove all the screws on the metal panel around the circuit boards. Lift this panel up to expose the back of the screen. The rectangular backlight will now be visible behind the screen.
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6
Peel off the tape covering the backlight and remove the backlight from the unit. Fit a new one in its place and replace the tape. Reverse the steps for reassembly.
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