Chosen Solution
I have a late 2006 white 20" Intel 2.16 iMac that will not boot. LCD stays black and there is no chime during the boot process. The first 2 diagnostic LED’s both come on but the 3rd never lights up. I have attempted to hook an external monitor up and still no video is displayed. At this point I have replaced the logic board, the inverter, and the power supply. Any thoughts on where to go from here? Is it the LCD display itself of a possible dead CPU?
Ever test the hard drive or memory? These should have been tested before replacing anything else. I would suggest removing the hard drive and memory then testing both with a different machine using Seatools for testing the hard drive and Memtest for the memory.
I have the same issue with my iMac 20" 2.0GHZ(Early 2006). The front light turns on and I can hear the HD noise and that’s as far as it goes (black screen with the front indicator light on). I took out both RAM modules from the slots and power it up, to see what it does. The front light just blinks because it doesn’t see the RAM, and that is the only difference. My iMac 20" 2.0GHZ did not have an internal HD, so I got it from eBay, but did not tested it before I installed it. I put the my Leopard 10.5.8 Install disk in the DVD drive, but it does the same. Tonight I will try it with my external HD that has Tiger OS X 10.4.11 (my old “half -dome” Imac PPC’s internal HD in an Firewire enclosure). Does anybody know how to boot up from an external HD? I have a feeling it won’t make a difference, since presently, it looks like it only get’s to the part of checking wether there is RAM memory, it does not recognize the keyboard. if you have any suggestion, you can email me as well: qsat@att.net
