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Re: 22" FLAT LCD FROM LG
Make sure the lcd monitor is connected to a voltage regulator because if your electricity is fluctuating then that might be a cause of the flickering of the monitor. make sure also that the video card of your operating system is configured properly and the drivers are working fine.
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sounds like a capacitor in the power supply is going. Check caps and look for bulged or leaking component. Most new devices have non filled caps so you may not be able to judge these by a visual check.
The W2252tq uses the AIP-0165 power supply board that is also used in the L227Wtg series LG series monitor. This board is known to have issues with the filter capacitors going out. When they go out it causes the monitor to not power up just lie you have. Here is a picture of the power supply board in the unit and below is a link to a repair guide for the L227Wtg, since it has the same power supply the repair guide for the board will be the same.
First of all check your mains lead make sure it is not fused. then check the lead from the monitor to the computer make sure it is connected ok then check your video card You can try connecting the monitor to another computer to see if it works on that one
disconnect all the cables except the power cable and then turn the monitor on you would see a test screen if it still happens your monitor is faulty and better buy a new one as repairing is usually expensive .
try to set your screen resolution to maximum using Display Settings in windows. Besides, are all software drivers for this monitor loaded and properly installed? Right click My Computer=>Properties. select hardware => device manager. Make sure video icons are not marked with question marks. if they are, install monitor drivers shipped with your monitor.