Question about LG Computers & Internet
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Posted on Jan 02, 2017
Hi Randygui, Sounds like the back light inverter board is bad. It's a very common problem. LCD's use four small cold compact fluorescent bulbs to back light the display. (thats what gives the LCD it's brightness allowing you to see it) The inverter board runs these lights and when they go bad they will typically show symptoms like you have or the monitor power light comes on and you have either no display or a very dim display. If you ever have one that has no display but the power light is on you can check by shining a flashlight directly into the LCD from the front (right into the screen) if you can see an image then it's either the inverter board (most likely) or the CCFL bulbs have gone bad. The inverter board and CCFL's are replaceable. Good Luck, El Duderino
Posted on Nov 26, 2006
My samsung 19" Syncmaster 920NW monitor is connected to analog port in my hp pavilion laptop.After the windows xp logo and loading,the monitor screen goes blank and the power LED blinks.The display functions normally on booting up in VGA mode (640X480).It functions normally on safe mode (800X600).In the normal mode,the screen goes blank and the power LED flashes.But, the laptop,main LCD panel shows alright.The display adapter is Nvidia GEFOECS GS 7600.What could be the poblem.
Posted on Oct 06, 2007
Thank you for providing your configuration details.
You have failed to specify wheather or not your LCD Display is under Warrenty.
Perhaps these simple trouble shooting procedures will get the job done.
1. use the DVI to VGA adaptor that came with your card
Plug in a regular CRT monitor to the Primary Display Output Port using the DVI to VGA adaptor
( either port can be designated as the primary by you )
I like to use the Port nearest to the motherboard as the Primary
2. plug in the your LCD monitor on Secondary Display port using your DVI cable
At this point you should be able to see your desktop on the Primary CRT Display
3. Go to the display properties and use the Nvidia Dual Display Setup Wizard
set both desktops to CLONED at a resolution of 1024x768 and set the refresh to 60Hz
which is default for most LCD displays , some have higher refresh rates , consult your user manuel
If the display resolution and refresh are set incorrectly for your CRT or LCD you will see
Signal Out of Range ( if the display has the ability to display that error message )
At this stage both displays should be showing a Windows Desktop
If you now see your desktop on both displays , you can now put the LCD on the Primary Port
No Signal Detected ( this means the display device is not receiving a signal )
If your LCD display is still displaying the error message
"No Signal Detected" after performing the trouble shooting proceedures
You may need to read the user manuel about how to enable DVI signal input.
If you are certan you have done everything correctly but still see only "No Signal Detected"
Your LCD Display may need replacement
Loch Hime :-)
Posted on Sep 14, 2008
nothing to do with your back light.
PLEASE try another VGA cable
I say get a new vga cable and your troubles will be over,had the same problem with a dell lcd and a lg lcd new cable worked on both ! I know, how does a cable fail , who knows ? must of been a bad batch or something silly went on !
Posted on Oct 30, 2008
Maybe you can update your video card driver. My wife notebook is connected at times to my DELL17" flat screen and ever so often it cuts off in the middle of something. I update the video driver and reset the monitor to factory settings and it's working like a dream.
I suggest, you use the menu buttons on the LCD and reset it ot factory settings, and possibly update your video card.
Posted on Aug 13, 2009
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