Hi I am looking at a iMac G4 20" 1.25 ghz that has some problems I would like to hear what you guys might think is wrong I would like to point out I am pretty good with computerts and loooking for a project here is what the seller says about it. "Computer powers up but does not chime, and nothing shows on the display. I can hear the hard drive spin up, and I can use get the DVD tray to eject, but no video." ---------- If the lcd is broken could I use a cinema display lcd for a replacement? or could I mod a another lcd to work?