SOURCE: how to check the backlight life of my hp l1706
Claimed life for the lamp is 50,000 Hours, but in real life, no way to tell. You can look here what is failed in the backlight lamps, it can be from worn out (blacken ends is one sign of bad lamps, same as home fluorescent lamp), poor soldering works on the lamps. see pictures here: http://s807.photobucket.com/home/budm/allalbums
What is the problem with your monitor anyway?
SOURCE: HP L1706 LCD Monitor Defocouse ,How solve
For best picture on LCD monitor, the PC video setting should be set to the native resolution of the monitor, which is 1280 x 1024 @60Hz for this model. If it is correctly set up then, you may have the problem with the monitor. Post back so we can guide you further to see if we have to oepn up the monitor.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
SOURCE: Well,I'm having a problem with my hp LCD Monitor
You need to open it up, first place to look will be the power supply section, look for bad caps. Post back what you see inside so we can guide you further.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague
SOURCE: how to check the backlight life of my hp l1706
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00032234&lc=en&cc=us&dlc=en&product=324213
Look at Using the On Screen Display.
http://s807.photobucket.com/home/budm/allalbums
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