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The lamp on the power supply adapter should be on the minute it is plugged onto the AC outlet without the DC plug connected to the monitor, if it is not on then the AC adapter is bad, you can check the DC voltage with a digital meter. Post back so we can guide you further.
It sounds like the PC video color setting is at 16 instead of 24 or 32 bit color setup. You need to check the display properties setting on the PC (Right click on the desk top). Also try it on other PC and also check the VGA cable.
Hi there... First check your AC Adapter, see if it still lite green. If it not then you need a new AC Adapter. If AC Adapter still lite green, then your back light inverter are busted. It's more likely your inverter are busted... I can repaired for you... for more information @ www.3rd-Rocks.com Thanks, have a nice day!
Had the same problem with mine. First you need a volt meter (radio shack about $15). check the push in connector and make sure it has coming from it.
Place you meter on DCV for DC voltage, Then place one lead in the end of the plug in the hole. (will not fit all the way so will need to hold it there, Put the other lead on the shiny part of the plug. If you get a reading of 12 volts +/- 1 volt your good. Depending on which lead is were you may get a minus reading this is fine as if you switch your leads around it will go positive. you must have the cord plugged into the wall to do this test. You will not get shocked or anything as 12v is not enough to hurt you.
If you have the 12 volts the problem is in the monitor on the male plug or on the board. this takes more to fix and must take the back off the monitor and fix the connection or replace. I did this to mine and it is working right now.