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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 HP 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://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
ysm7862001, Monitor has possible problem lighting-up cold cahtode fluorescent lamps that provide lcd panel with white light from rear(reverse side) of the panel. No white light= black or blank n black screen. Read my fixya profile for all options you might have open to you.
Possible answer as I had same issue. I found the button you press has small tip that presses the actual switch to turn the monitor on. My tip broke off so switch can not be made. Hp does not sell button as that is what I am looking for myself.
knpeterso548, I wouldn't even worry about that little power "ON" indicator light. As long as the button functions as an "on" or "off" switch, you will only need to remember to turn sleep mode setting to total "off" mode (disable) in the pc. This way you will need to turn off the monitor with the BUTTON when you will be away from the pc for more than 1-2 hours. Face IT!!! Even I would charge you $15 just to open it up! $10 for a new "on/off" switch/with led and then $10 to put it all back together again. Give a call to HP (High Price) and find out what they will charge for replacing a switch. As long as the LCD panel displays brite, crisp images and text, you are way better off than those who don't see a thing on their LCD screen when they press the power "ON" button.
Bye for now. 12fix louie
your monitor could possibly have a backlight problem.. the wires to the lights are known to come off the lights in the screen.. if you try to check it your self be careful the lcd screen and lights are very frigile, nad can brake easly..
j1hoo2, You will just have to go to YOUTUBE and search for things like::: lcd monitor disassembly or lcd monitor repair, or bad caps in lcd monitors, or repair of monitor SMPS/INVERTER power supplys. Yes!!! I have seen a couple of vids that show how to unsnap the rear plastic cover from the front bezel. That is the hardest part to do after removal of the monitor PEDESTAL. I'm louie12fix on fixya, or lmistyrel@ aol.com
ps I've also heard that really dull table knives may work and also an old credit/swipe-card might work also.. I mean did an elephant step on the monitor on/off button???? Come-on, their not supposed to FAIL !!!
With the computer on and the monitor connected, shine a flashlight at a slight angle on the screen and see if you can make out a picture. If you can, then it is most likely the ccfl inverter, if not possibly the power supply of the monitor.