I recently purchased an LG Flatron L222WT Monitor. I hooked it up (analog) to my Gateway GT5432 computer and it will work for about 5 minutes and then will go black and then it will show up with an odd white pattern. I'm running a Nvidia Geforce 8600GT video card and have 4GB of RAM. I have no problems with my Acer 17" LCD but just can't get the LG to stay up and running for longer then 5 mins
Check the memory IC, Horizontal-vertical IC then check the processor voltage are the stable & is it support the refresh rate. at last check the EHT transformer, may be your processor controlled through it or it loses the flyback voltage .
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Go back to Dell monitor. Remove any video drivers from hp.change video resolution both in windows and in video card settings to standard 1024 x 768 (yes it will look horrible) then hook up hp monitor. Don't install drivers if prompted get them from hp website then adjust resolution through video card settings after drivers installed which probably require restart.
you talk about a dell monitor but categorised under LG monitor...
if it's a Dell monitor, and its recent, it's possible you've put it in analog/digital mode when you need the other mode.
push the left button on te front of your screen that should switch your screen from digital to analog or vice versa
You could have a faulty inverter board or a faulty CCFL lamp. The inverter supplies high voltage to the CCFL lamp and the CCFL lamp is a mini fluro tube. Have a look at LCD Patrs WEB site for service, parts and DIY info Use this link to their WEB site :- www.lcdparts.net
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.
Power saving is the default the monitor goes into if it doesn't get the correct signal down the cable wires of the computer. There might be three culprits: (1) the cable between computer and display (most likely), (2) the display itself (unlikely since you see the LG logo) and (3) the graphics card inside your computer. #1&2 are easy to check by swapping with a friend for troubleshooting. #3 is tricker and more expensive and might require a savvy friend or a computer repair service (between $60 and $100/hour for labor) plus between $40 and $80 on Amazon.com for a new card depending on whether you need a analog or digital one. Don't waste money on super costly cards unless you use your computer for gaming.