L91a monitor monitar has a bluish greenish look to it when I turned it on this morning

Hi,
You have to check for dry soldering in the base board of you mointor. The base board is on which is attached to the picture tube neck. In most cases there will be dry soldering in the pins of cathode diver ic in that base board. It will be difficult find out which pin have the dry soldering. Do on thing resolder all the pins of that ic. This ic cotrols the three cathodes of picture tube (red, blue, and geen) is any one did not get the correct drive that color will fail to display. In your case the red cathode is not getting the drive voltage. Thats why it shows only gree and blue. This is a reular complait for crt monitors.
ok

Color casting (Blueish, Greenish, Redish) problem is usually caused by bad video cable or bent pins on the video cable or the video plugs are not seated properly, it can also be bad vidoe card, very rarely caused by failed monitor.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

hi solution of this problem u can change cfl of lcd screen

Look for shorted out transistors and blown fuse, it is almost the same as 1740, also inspect the caps.
http://s807.photobucket.com/albums/yy352/budm/HP%20L1740/

coolvegasmik, Sorry, to hear that your "cold cathode-fluorescent-lamp-back-lit-lcd-monitor" is not working. Did you hold and point a bright flashlight 1 inch from the lcd panel when it went to "black-screen"??? Did you see any icons on the "black-screen"?? Software NOT a fix for this "black screen of death" problem. You or electronics technician will need to open L91A and look for bad capacitors or bad soldering on the power supply printed circuit board. If unit is 4 to 6yrs old, just trade-in for new wide screen unit. See video clips of swollen bad capacitors at YOUTUBE when you search "lcd monitor repair". All lcd monitors (99%) use same basic design and principle of operation. Sometimes ccfl back-lit lcd monitors can be repaired for less than $6 in parts and monitor will work for 1 to 3 more years. 12fixlouie

Please check to make sure that the pins on both ends of the VGA cable are OK and seted properly on bothe ends.
There is no adjustment for color casting on the screen (redish, greenish, or bluish cast).
You may have problem in the monitor or the video card.
http://s807.photobucket.com/home/budm/allalbums

http://s807.photobucket.com/albums/yy352/budm/Sceptre%20X7G/

Happened to my tv. Sign of tv or monitor going bad.

There are 4 screws on the back that connect the monitor to the stand. Remove them and turn the monitor right side up and replace the screws tightly. OR you can change your layout in your video card settings.

This could be a backlight problem- Dont know about a fix though
I guess some one may repair them[new tube[s]]
I guess what ever the labour plus parts will be well on the way to a new one.
How old is it by the way - any warranty left?

Is the resolution set to the monitor's native resolution? Your video card must support the monitor's true resolution, this is particularly important with wide-screen LCD monitors.