Question about ViewSonic VX900 19" LCD Monitor
Every time i turn the monitor on it shows a clear picture but, only for a second. can this be corrected? is this something that i can do myself? please help !
Replace your monitor, it's broken
Posted on Feb 25, 2008
Your backlight inverter is likely to be broken, can't hold the charges.
see following link for self replace the parts:
Posted on Feb 25, 2008
There could be a couple of possible reasons for your problem:
1. All LCD displays uses CCFLamp to illuminate and provide backlight to the panel. More often they burn out or thier connectors gets corroded or the circuitry that powers these lamps gets defective. Defect can either be component failure or loose/cold solder joints. At times it could be the capacitors that dries out or have developed blisters on the top portion.
2. There had been cases where it is the power supply of the monitor that is in problematic.
3. In some cases, it is not the monitor that has a problem, it may be the video card of and/or the PC itself. This could be confirmed by using another monitor to eliminate this possibility. At certain times, it may be due to the Screen Resolution settings of the PC or the Screen Refresh Rate.
Things you can try:
a. Boot your PC normally even if you cannot see anything. Shine a flashlight obliquely to the screen. If you can see semblance of your desktop no matter how dim, then you have just confirmed that it is the backlight/CCFLamp or its inverter that is the problem. this is repairable but would require that you be familiar with electronic components and circuitry, use of a DVM and a soldering iron;
b. Internal or external power supply for LCD display panels/monitors are likewise repairable. Again the same requirement if you are to proceed doing the repairs.
c. Adjusting the Screen resolution and Refresh Rate can be done in the PC by booting into Safe Mode and lowering the settings.
Should you not be comfortable on options 1 & 2, perhaps your best bet would be to seek the services of a qualified professional.
Hope this be of help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Posted on Feb 05, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Basic LCD monitor and TV troubleshooting guide:
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.
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