I have viewsonic 1703wb monitor. Often Monitor power went off

My best guess is toast. . .

This is typically a sign of a video card that is not working right. The other possibility with ViewSonic is that the monitor went bad. MNy best advice is find someone with a known working computer and hook the monitor up and see if it works or not. That way, you can determine if it is the monitor or the computer. Also, the VX2255 may be under warranty. A visit to viewsonic.com will help you determine if they can repair/replace (if your test finds the screen to be bad.) Be sure to un plug the monitor from the wall; wait a moment, and plug back in to determine if a power blip may have caused an issue too.

Best of luck.

Hard to explain but these pictures may help: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX900/

cap in the power supply went bad radio shack 1.24 cents and about 30 minutes

Bad caps in the power supply, common problems. See examples here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20V912B/

You need drivers for your Graphics Card.Your monitor has nothing to do with that.You just plug the cable after you have installed the right graphic's card drivers and you ready to play.

Good Luck.

Swap monitor connections to determine if one of the monitors is not working.
If one is not working you probably have an internal problem. If power led responds to the off-on button but no picture is seen, the inverter has likely blown a fuse. Replace the fuse and resolder the leads on all 6 inverter transformers or the fuse might blow again.
Monitor Mike

Your power supply has gone bad you need to take the back off. Check the power supply look for blown caps the tops will be raised replace them that will fix the monitor.

xZAxZC

no, Viewsonic has the part for sale 42.99 - free shipping. Easy to replace