I have a viewsonic vg730m-3 that will power up,but it has a black screen with a blinking power light

try another power supply unit

Screen rotation is provided via software from the Graphics Card provider. You won't find rotation options in the normal display resolution/refresh rate settings screens. You will have to download the associated NVidia or ATI (or other) advanced features software from the web.

I've been having the same problems with my Viewsonic.I plug it in and the blue light blinks but there's no picture it's just a black screen.I do know if Viewsonic doesn't repair my monitor I'll never buy anything from them again.I have the LCD Viewsonic 22' Vx2235wm monitor.
Does anyone have any idea what could be wrong with mine?I've bought a new video cable & video card but the monitor still does the same thing?Thanks

most probable cause is failing ccfl lamps or inverter!

Some 22" Viewsonics will have worn out bulging capacitors in the power supply that causes this symptom.
Monitor Mike

You may have failures in the power supply (bad caps with bulging top/seal), failed inverter circuits (shorted transistors, transformers), bad lamps (bad solder connection on the leads). You need to open it up and inspect the inside, post back what you find so we can guide you further. See example of failed VIEWSONIC monitors: http://s807.photobucket.com/home/budm/allalbums

look inside for bad caps, see example of failed Viewsonic monitors here: http://s807.photobucket.com/home/budm/allalbums

You should have 5v and 12v in the power supply sections.

you have to connect it via audio cable.
you need a cable with two 3,5mm stereo jacks. this you have to connect with the stereo output of your computer (mostly the green one) with the audio jack on your monitor. it's somewhere on the back i think. sound / volume control you do in windows - its the same as if you connect normal stereo speakers to your computer.
(perhaps you have to unmute or to raise the volume in the monitors os menu)

MY VP930b has the same problem.
It takes a very long time (5-10 minutes) before it becomes normal.

Make sure the monitor is set for the correct input