Dust – The silent LCD display killer
Dust that accumulates within your LCD monitor is a silent killer that can literally kill it in the long run. Blowing the dust away with moisture free air canisters can help a lot in keeping the internal circuitry clean and operating as cool as possible. These cans of air are specifically designed to come out dry and moisture free(as opposed to simple compressed air that contains moisture that can lead not only to an electric shock) as you send it out of the can.
Always unplug the monitor and take it out to an area with plenty of ventilation for dusting. You’ll surely see lots of vents all over so blow air within them, expect a huge cloud of dust if this is the first time you’ve done this in a couple of years. Repeat as necessary or when you see no more dust particles flying around as you blow into the casing.
Regular cleaning will ensure that components stay cool and heat-sinks do the same, allowing proper operation for may years to come(till the LCD screen dries up that is).

