I think my monitor is dead!

I have a 23" ACD and it has been troublesome since I bought it. For a while I had a problem where it would never turn off and the light blaring off of it would keep me up at night. I brought it in for servicing several times. Most times they told me there was no problem and two times I got it serviced. Now it seems it finally has died. It wont turn on at all. I tried unplugging it from all areas (the power cord to the surge protector, unplugging it from the brick, and unplugging the ACD cord from the back of the mac). I also tried plugging the power cord into another slot on the surge protector to no avail. I getting very tired with the problems with this monitor. Hopefully I can just get a new one but I don't know what I'm going to do in the meantime. I should still be protected under apple care but that might be almost up. Any feedback would be greatly appreciated. Do you think I would have any luck on getting a discount from the 23" on a new 30" (just wishful thinking I guess but deserved after all the trouble it put me through).

Any ideas on what I can do. I'm at a loss as to what else to try.

I took it down to the Apple Store this afternoon. After all the times I have gone and all the repairs it seems the power brick was at fault. I got it replaced under Apple Care and it seems to have done the trick. The monitor goes on when I need it to and it stays off when I want it to. This has been an annoyance for three years and I hope this finally does the trick.