By the way, here is a trouble shoot guide that I gleaned while researching why my monitor was not working.
Common Problems:
1)
Defective Adapter brick. There's a green led on the brick. If it doesn't power on when the adapter is connected to the main, that means the brick is dead unless you have a blown led.
2)
Problems with Radeon video cards. A lot of people don't realize that most of the 6xxx and 7xxx range video cards have a physical switch on the card which can enable dual-link or single link signal on the dvi output. Its located next to the cross-fire connector. If the switch is on the single-link position, it may result in the crossover turning on, flashing blue on the led and then after the monitor lighting up once, display will shut off and flashing red led will light up indicating no signal.
3) This doesn't apply to the crossover model, but some Achieva or Shimian models have very
shallow VESA mount screw holes. If you screw too tightly to the stand, the screw will actually press against the PCB board and may short it.
4) If the adapter green led lights up but the monitor refuses to power on, the
cable connector on the monitor pcb board may be loose. For the crossover, unscrew the stand and all the screws on the back and bottom edge of the monitor, remove the metal frame (you can't remove everything in the center because some of it is attached to the connectors on the panel. Make sure you don't pull any wires loose) and make sure all the connectors on the pcb are secure and have not come loose during shipping.
5)
Hot power adapter. Make sure your power brick is not red hot during normal usage. It should get warm or even uncomfortably warm, but if its about to cause burns, then you should definitely check it out as your capacitors will roast if the temperature is too high. If it is, you might want to open it up and make sure the connection between the transformer and metal plate is secure. There is some cruddy Thermal compound which I suggest replacing with a decent after market thermal compound. Also just do a visual check to make sure none of the capacitors have ruptured. Do make sure you UNPLUG the adapter from the main, power up your monitor to discharge as much stored charge as possible. I'm paranoid and use a rubber handled screwdriver to discharge at the 4 pin socket even after doing this to make sure I'm not going to get shocked. There shouldn't be enough to kill a person from these capacitors but I'd rather not find out the hard way.
6)
DVI cable. Some people have reported getting lousy DVI cables. If it doesn't work try replugging the cable and also changing which head connects to the monitor and the computer (reverse the current direction of the cable). It may sometimes help. Alternatively, buy or borrow a dual link DVI cable to check if the current one is defective.
If after all this, the monitor doesn't power on, then you may just want to ship it back to the seller and get a replacement. Sometimes **** happens.