MONITOR GOES ON FOR A SECOND AND THEN GOES BLACK

Yes it is. BenQ has a massive Cap/Transister issue. Unless you have a decen't grasp of soldering/parts ordering it might be best to buy a new monitor.

Hello,

The picture board on your monitor is bad, since it goes black after three seconds, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity or any service center to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

Try connecting another screen and change resolution & frequency level to like 60hz, then switch back to your hp monitor.

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

you Screen has a Soildation problem take it to near by electrition he will resolidate your screen and it will then work fine..

With a known working monitor try it on the computer. If the monitor stays on then you know the original monitor is bad. If the monitor goes off after 1 second again, then you know that the video card is bad.

Sounds like a bad solder joint on the printed circuit board. Once it heats up then it no longer makes good contact and the monitor goes black until it cools down and makes contact again. You could resolder it if you knew where it was but monitors are dangerous to go playing around with as they can hold very high charges of electricity in their capacitors that are very dangerous. It's a throw away world. Go buy a new one.

budged electrolytic capacitor nearby high voltage transformer. 220microcarad/25Volts. apply fresh solder and re-connect lamps.

You need to disasemble and check for dry or burn capacitors first then check for the transistors near the inversors.Good luck

Same problem here. Does anybody have an answer?