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The screen resolution and bit color is controlled by the video driver NOT by a driver for the monitor. Install the correct video driver for your video card and you will be able to increase the screen resolution to over 1024 X 768 and bit color to at least 32 bits.
The fluorescent lamp has failed.
The LCD monitor has a "backlight" in order to illuminate the video images that you see.
It may be too costly to repair, since it may break again after repair.
New LCD monitors start at just under $100.
Quick fix, if you are brave:
With an open palm (not the PDA), whack the side of the monitor gently or not so gently to see if it works.
If so, you can either replace the monitor or put up with a sore palm.
Hello! Well, it's like looking for the holy grail. I use diplodocs.com to find a lot of user manuals. There are 4 Cornea user guides--from the 1701 to the 1904--no mp503. The main site for your monitor is corneasystems.com. NO contact info at all...try an 800 number search--might well strike pay dirt. Don't look on the web...actually call the 800-555-1212 number and have an operator do the search--I've experienced "no joy" too many times!--Good luck!---Rick
This link, is to the User Manual for the Envision H 819 TFT LCD monitor, http://www.technostation.com/user-guide-owners-manual/Envision/Envision++H819+LCD+Monitor Under the User Manual heading, you will see -> 2009-04-08 12:20:36 To the right of that is -> cache <- in blue. Click on -> cache
The Envision user manual, plainly states that the Envision H 819 monitor, is a TFT monitor. [18.5" (47.0cm) TFT Color LCD Monitor]
You have a bad set of capacitors on the power board. If you have little to no electrical knowledge then I can't advise strongly enough to take it to your local TV repair shop.
The repair is not expensive and will save your life and your sanity.