Px42XR3A, NEC monitor lost picture of any type after showing a series of color bands from all sources. No other set in the house is affected and the sound through the receiver is just fine.

Try clean install display driver.

That is not monitor driver problem, the monitor driver will enable the PC to be able to set the proper resolution. You should try it with another PC first. What do mean by cannot get proper color?

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.

Is the picture still visible? If it is yes you just need to factory reset the monitor. If not, check your inverter.

You do not degauss LCD monitor, it does not use electron beams (affected by magnetic field, if the showdow mask is magnetized, it can mees up color display) for making pictures like LCD.
You only degauss CRT type monitor.
http://en.wikipedia.org/wiki/Degaussing

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: 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, you can try this; in a clear area of the Desktop screen (right)) click, once the desktop window open, click on Personalize, next click on Display Settings. You can adjust the brightness by by doing the following: On the resolution scale adjust from Low>High; you can do this until you are satisfied with the view. In the (Colors) drop box, click the down (Arrow), and choose the "Highest" color (16bits>32bits) etc. Next click to open the (Advance)) settings, click on the (List All Modes) button, once the window open choose the (Highest) settings: example (1366 by 768, True Color (32bit), 60 Hertz. Remember to click the "Apply", and "OK" buttons after each selection or change. "Hope this helps' Ya"

If Blue colors display properly in pictures or graphics check the display and size settings of your computer in relation to the size monitor.

If there is a problem with the blue color because of a problem with the monitor you might be able to compensate for it either with controls on the monitor or with the control software of your video card.

If you're using component video (red/green/blue rca cables) one of the colors may be disconnected, or the wires may be swapped into the wrong color input. If you are using a 15 pin VGA connector, one of the pins may not be getting good contact at the source or at the projector. Or if the VGA cable is split into 5-wire to make a long cable run, one of the five wires may be disconnected. Any of these problems will cause a global color shift while not affecting the color of the projector's on screen menus.

try to check ur Picture tube 

- A bended color pin at the VGA connector. (If pin one is bend then there would be no red color)

- A defective VGA signal cable. If the internal wires were broken then there would be missing colors. You can check if the signal cable is good or bad by doing a continuity test using a multimeter.

- Dry joints in the CRT board such as in the CRT socket pins, video pre amp and driver IC and even at the connector pins. In fact this problem contributed about 80% of Monitor color problems. Applying fresh solder would usually solve the color problem.

- A defective IC either in the Video Pre-amp or Video Driver IC.

- Faulty components in the CRT board. It could be a shorted driver transistor or even electrolytic capacitors that the ESR reading had shot up!

- A bad CRT socket. Sometimes decayed glue could cause the internal pins rusted and thus affecting the colors. Replacing only the CRT socket would definitely solve the problem.

- A weak or a defective picture tube (CRT tube). Yes, I do came across one of the electron gun (most probably the cathode materials had used up) in the tube faulty caused a missing color in the screen. There’s no way to repair this type of problem-the only way is to replace the CRT tube.

- In the newer type of Monitor, color setting is save in the EEPROM IC . Thus, if the EEprom data is corrupted, you would also get a missing color! The only way to repair it is to reprogram the IC or use a soft jig to tune it back the color setting.



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The monitor may not be able to handle the settings of the video adapter. If you boot into safe mode (tap F8 key as the computer starts), does the display appear correctly? If so, then you just need to turn down the settings (resolution, color quality, frequency) to the lowest possible settings. If the display still appears wrong, then it may be something wrong with the monitor. You can try connecting the monitor to another CPU and see if you can replicate the results.