Back Light The back light for the lcd display only come on for about 2 seconds then go off

Main System Board is faulty.

back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

sounds like back light inverter is bad might be cheaper to replace than repair

This could be that the screen topback light or bottom back light is bad or the inverter.
the topback or bottom back light could also be seing as the flouricent of the screen that light up the screen to enable display visible.This top back light or botom back light as the name implies is positioned at the top and bottom side of the screen.It takes an expertize knowledge for one to be able to change the flouricent when comfirms bad.The same is applicable with Inverter.

pandres, Your monitor will need troubleshooting to find out reason why the 2 "cold-cathode-fluorescent-lamps" fail to remain lighted. They provide "white light" so you can see what is on the lcd panel. Connect a "known good" monitor to your pc to prove monitor is bad. If pc is ok, then your monitor will need repair. This type problem not new and is very common for all brands of ccfl back-lit lcd monitors. Watch some video clips at YOUTUBE that show disassembly and repair of ccfl lcd monitors. Read fixya profiles of "budmrtn" buddymc" "12fixlouie" for more information. 12fixlouie

Hi,
There are two possibilities for back light off after 2 seconds.
One reason is back light inverter boards got defective for some reason (this tv has 2 back light inverter boards on either sides) and second possible cause is power supply is not giving out sufficient voltage supply to back light board.
Let me know your expertise level to provide you more technical info.
Thanks.

screen problem.....check ur display....

This could be one of two problems, the light in your monitor has a loose cable, or the light is dying. I have seen cold cathode lights that are about 10-15$ to buy and many instructions on putting them in yourself.

Solution 2, your cable is loose on the back of the monitor. Make sure you have the screws tightened on either side of the vga or dvi cable, both on the back of your monitor and on the back of your computer or laptop.

I would bet on a failed FL Inverter board which is the board that runs the backlight.

However, if your LCD is RED before it goes dark your backlight has failed. Given the age of the machine you will probably have to get parts from ebay.

If you can tell me the part number of the machine (on the serial number sticker) - I can look up what inverter or LCD you need - there are several different screens the 6000 series uses that are NOT cross compatible.

The LCD not displaying a picture may just have a back-light issue. You can verify this by turning on the display, taking a flashlight and pointing it at the LCD then looking at the area that is illuminated on an angle and up close (1" - 2"). If the picture is visible then it is a back-light. You either need an LCD back-light inverter or the back-light itself.