Viewsonic VA720 monitor has small blinking light, won't turn on

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

Are you sure you have broken switch, not failed power supply due to bad caps? Please see VA721 pictures (same chassis as 720)
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VA721/

http://s807.photobucket.com/home/budm/allalbums

disconnect all the cables from the monitor except the power cable and turn it on if still the same issue the monitor has gone bad.

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.

There are more than one version of your monitor. Check and see.

http://insidecomputer.stores.yahoo.net/viewsonic-va720-60w-4pin-lcd-ac-power-supply-1599-1ye72060415991.html

http://www.lcdpayless.com/productpage.php?productId=4664

You will need to disconnect the VGA cord that is connecting the monitor to the hard drive. Once you have that disconnected, try attaching another cord to determine if the cord is the issue. If you dont have another cord to test, then you will have to purchase another one from your local computer parts store and attach to determine if that is the issue you are having.

If the cord does not work, then you will have to take your monitor into a repair shop as there maybe an issue with the receiving port on the monitor.

I hope this was helpful and thanks for asking the experts.

Monitors and PCs (amongst other things) use a fairly standard power cable. You should not need to worry about the specifics as there is generally no transformer needed for a monitor.

Bad capcitor in the psu would cause this to squel and even pop so have it looked at you be glad you did.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

his step-by-step guide describers how to obtain and install ViewSonic VA720 drivers for Mac.
1. Define your ViewSonic Monitor device model.

2. Define your operating system to install your ViewSonic Monitor device. Note: Update Drivers in Mac

3. Browse Monitor Drivers.

4. Find ViewSonic Monitor Drivers.

5. Select ViewSonic VA720.

6. Download ViewSonic VA720. Note: you can update all Drivers automatically with RadarSync (Freeware) or Driver Detective (Shareware).

7. Install ViewSonic VA720.

8. Restart or reboot your computer to finish your driver installation. Note: you can backup your computer drivers before updating.

You can email [email protected] and provide your telephone number... he will call you to assist.