Oops. sorry, sent this earlier with my non-member email, and got semi bounced. I know i read this here just 2 weeks ago: Here are the symptoms: 15 inch lcd studio monitor goes dark, and the light on its front panel flashes, and there's a very soft clicking noise. What do i do??? Even when it seems to be functioning normally, the light in front flickers. however, it goes to sleep normally, cos the light pulsates when the mac goes to sleep. The rest of the cube still seems to function, cos i can still play music off it and all that. it's a stock cube, with 1.25GB RAM, and a seagate 80GB drive. running OSX 10.3.6 I've also not been able to adjust the brightness for the longest time. Control panel does not show a monitor brightness bar. But it's occasional, sometimes, the brightness slider returns.