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Check for blown capacitors on the power supply board, this is a very common problem with LCD monitors. Here is a link to a web article showing what to look for. The second link is to a source for capacitor repair kits for that series monitor.
If the power light does not come on, first try another outlet. If the
monitor has a removable power cord, try another cord. If those don't
work, there is a fault in the monitor power supply. Most likely the unit
has bad capacitors. You will have to check them visually (you have to take the monitor apart). If they look
domed on the top, and perhaps stained, they will need to be replaced. If
you cannot solder, then it's time to either take it into a service
centre, or replace the monitor unless you have a friend who can replace
You can Google "replace capacitors in LCD monitor" to see examples of
what must be done. If you inspect the power board and the capacitors are
fine, there may be another problem with the power board which means
unless it's a monitor worth over $200 it's unlikely worth having the
power board replaced. Donate it to a school for their students to
No, sorry, it's not a simple fix. The usual reason an LCD monitor does this is because capacitors in the power supply fail. Then the inverter circuit which provides power for the backlight lamps doesn't work properly. In many cases, replacing the capacitors is all that's needed to fix the trouble, but it means opening the case, removing the bad parts, and obtaining and installing new ones. It's not a very difficult repair as far as repairs go, but it's going to need more than a screwdriver.
Many websites and videos are available that detail the repair procedure for different models, and capacitors are readily available from many sources. If you know someone who has some experience with electronic soldering, or you're willing to try it yourself, you might be able to rejuvenate this one. If not, you're probably best off buying a new monitor. Basic models are quite inexpensive now, and if you pay someone to fix yours it might cost nearly the same.
When you get horizontal line, especially colored, it typically means there is a problem internally: either with the LCD inverter (backlight), LCD Circuit board (interprets incoming signal) or the Display panel itself. Sometimes shaking it around can clear up the issue slightly but for the most part it's time to get a new screen. If you have pictures I can verify this is the issue.
Any other questions, feel free to ask.
More likeley to have bad caps in the power supply, that is the first place to look, see example of failed VIEWSONIC monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
VA 730 may have the same chassis as VA720. If the cpas are bad, you should replace them with PANASONIC FM or FC series caps from DIGIKEY. Your college should have good electronics test equipment to repair these monitors.
It sounds like you have a monitor with a common problem, we have
repaired many Samsung monitors with this problem. After a few years
some LCD monitors
will blow a power supply. The problem is caused by parts called
capacitors overheating in the confined space of the monitor. If you are
good at electronics repair/soldering you can usually fix the problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htm You can take the back cover off your monitor and look for the bad parts,replace any that look like the pictures and your monitor should work
fine. The capacitors do need to be installed with the correct + and -
connections, note the stripe on the old one and insert the new one the
same way. If you can't do the repair we offer a repair service, contact us for more details or if you have more questions.
I hope this helps, if so please rate my solution.
Corporate Computer www.ccl-la.com
Over 21 years of computer and printer support/repair
I am sorry about this but the correct repair for this issue is replacement of 4 transistors on the main power board inside the monitor I just completed a repair on a dell 17 inch monitor it now works flawlessly. the process can be found on the internet and it is very delicate work. if you can all their service center you used then by all means call them, And just fyi TYPING IN ALL CAPS IS THE SAME ASSCREAMING AT THE TOP OF YOUR LUNG SOO PLEASE STOP AND USE CORRECT NETTIQUET. you have a nice day now.