Turn power off again

did you check the output dc voltage at the power supply board if stable. if ok tried to disconnect first the supply going to the power inverter board of screen back light just to ensure if not the cause of shut down.

I also had blown capacitors on my power supply. You can see when they're bad: the tops split or bubble up like a dome. I changed most of the caps, just to be sure, and it fixed the problem. Careful of the larger capacitors. They stay powered for some time and can shock you pretty badly. Good Luck

The monitor has failed, it is almost always cheaper to replace it than fix it.

The refresh rate differs so thats why it turns black .

I also have a hp w1907 monitor which also powered on for a second and then go blank with the power light still on.. it was out of warranty so I had no loss so I took it apart..I found one of the wires broken at one of the backlight bulbs { becarefull they are fragile and there is four of them, two on the top and two on the bottom... and the lcd screen is very fragile } I soldered the wire back on and it all work fine... just remember where all the screen parts go.

If the screen is black and you have sound then lightly press and shine a strong flashlight against the screen. If you see an image around the edge of the flashlight, an image is being 'displayed'. The problem is probably in the Inverter/CCFT or the power going to the Inverter.

I'm having the same problem, my power button just flashes now, and it seems like the screen tries to turn on over and over again.

I'm pretty sure its the backlight for the LCD.

If your very handy, go to inventgeek.com and type in LCD backlight fix.

It would be either the backlight behind the LCD or the inverter board capacitors going out, my suggestion buy a new LCD screen.

Check where your plug go's in to your powersupply if it is well fitted. ////sometimes it dosnt make well connection then you will struggle to get it on.

The camera may have shut off automatically to save power. Press the POWER button to turn it back on. Also make sure the mode dial is turned completely to the desired mode. When the camera is connected to a computer, the LCD screen is disabled. When it is connected to a printer, press any button to display the print progress screen. After a moment, it disappears again.