Lcd Not Working Correctly Anymore.

Monitor takes a while to "warm up" after starting it

You turn the monitor on and it takes a minute or two to reach full brightness. This is a backlight issue. You can still use the monitor normally until the backlight breaks (which it will eventually).

Monitor flickers on and off randomly

This is laptop-specific. The LCD ribbon connector cable is damaged from normal use of opening and closing the lid over time. This can be repaired. The monitor does not need replacement, but the ribbon connector cable does.

If you’re brave enough you can order this part from the OEM manufacturer and replace it yourself. It it normally located under the left-side hinge. It is not easy, but certainly cheaper than replacing the entire display.

Suggested course of action is to locate an authorized computer repair center and have them replace the ribbon connector. It will cost anywhere from $60 to $150, labor included. This may sound expensive but it’s still cheaper than replacing the monitor itself which will cost a whole lot more.

Corners or one side of monitor appears dimmer than the other

Again this is a backlight issue. There is no fix. Deal with it or replace the monitor.

Everything "goes green" or "goes pink" or "goes red"

For laptops, again this is the ribbon connector cable. Replace it. For desktops, replace the monitor cable which may or may not fix the problem.