Everything Apple (the Mac heads thread)

Help! Did you actually read my original request. Part of the problem is that there doesn't seem to be any vision being sent to the monitor. May actually have to take the monitor in as well so they can test that.

Yes, I read your OP.

Could be anything, the power supply (you will be surprised the effects a defective PSU can have on a computer) - the motherboard, the hard drive, the monitor - etc etc.

A (known) working monitor would help determine where the problem lies.

I've got a couple of spare fully functioning Cinema displays sitting around - I am near Old Street roundabout.