24" went black

Suddenly, my Cinema Display 24" went black and I can't find a way to revive it. It still shows up in preferences and System Profiler reports it, but it just displays nothing. I'm very upset Any idea what can help me?
I have a system with two GT 120s, two 24"s and SONY TV connected:
NVIDIA GeForce GT 120:
Chipset Model: NVIDIA GeForce GT 120
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0640
Revision ID: 0x00a1
ROM Revision: 3386
Displays:
Display Connector:
Status: No Display Connected
LED Cinema Display:
Resolution: 1920 x 1200
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
NVIDIA GeForce GT 120:
Chipset Model: NVIDIA GeForce GT 120
Type: GPU
Bus: PCIe
Slot: Slot-2
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0640
Revision ID: 0x00a1
ROM Revision: 3386
Displays:
SONY TV:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Rotation: Supported
Television: Yes
LED Cinema Display: <---- this one is blank and black.
Resolution: 1920 x 1200
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort

Just came back from the Genius Bar. Dead for good, repairs would be around the price for a new one. What a good way to spend a thousand bucks on an LCD that will die in about a year. I guess I won't buy any expensive LCD from Apple anymore.

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