http://www.fixya.com/support/t2630438-apple_cinema_display_23_led_short_long
Solution #3 details the trick - it's really quite simple. I'll post photos later.
The trick to disassembling the Cinema HD is the following:
1) Using a spudger (or a small flathead screwdriver, very carefully) pry the plastic side coverings out from the aluminum housing. When you get a hold on them, gently peel them off of the plates behind them. Be very careful, and don't pull too far perpendicular to the side of the display or you'll break the backing and you'll end up with an ugly line in the side panel. Ask me how I know.
2) On the right side, disconnect the cable from the monitor controls. Be sure to hold it right at the connector on the board side or it'll peel up.
3) Undo the four screws down the metal plate on each side of the monitor. Philips #1 should do it. Lift the plate from the back side (relative to the monitor) and rotate it forward and it should come off the hooks.
4) On the left side at the very bottom, you'll find a little latch looking thing. Push it, and it will release the catches on the bottom of the aluminum housing.
5) Now the housing can be split open (it only opens at the bottom) and the panel can be slid out from the bottom, pulling the cable through the hole in the back of the housing as you go. Be sure to disconnect the LED connector on the front at the bottom. It connects under the piece of black tape holding it to the panel.
Enjoy. I haven't taken it apart any further than that, but board removal and things should be easy after that.
Solution #3 details the trick - it's really quite simple. I'll post photos later.
The trick to disassembling the Cinema HD is the following:
1) Using a spudger (or a small flathead screwdriver, very carefully) pry the plastic side coverings out from the aluminum housing. When you get a hold on them, gently peel them off of the plates behind them. Be very careful, and don't pull too far perpendicular to the side of the display or you'll break the backing and you'll end up with an ugly line in the side panel. Ask me how I know.
2) On the right side, disconnect the cable from the monitor controls. Be sure to hold it right at the connector on the board side or it'll peel up.
3) Undo the four screws down the metal plate on each side of the monitor. Philips #1 should do it. Lift the plate from the back side (relative to the monitor) and rotate it forward and it should come off the hooks.
4) On the left side at the very bottom, you'll find a little latch looking thing. Push it, and it will release the catches on the bottom of the aluminum housing.
5) Now the housing can be split open (it only opens at the bottom) and the panel can be slid out from the bottom, pulling the cable through the hole in the back of the housing as you go. Be sure to disconnect the LED connector on the front at the bottom. It connects under the piece of black tape holding it to the panel.
Enjoy. I haven't taken it apart any further than that, but board removal and things should be easy after that.