Maconthemove
Well-known member
Got two iMac DV 400 computers with dead power supplies. Will power supplies from iMac 233 or 266 work in the newer model?
It doesn't seem likely that a battery would cause something that big, but I think it would be worth a try since you can often get them cheaply from online stores. Sometimes weird things can happen because of batteries.Noticed that pink imac had no battery. Would that cause it to not start up?
When you do find it you will discover that the PMU takes more than a prod at the button to reset it. The PMU is a computer within a computer, and it repays extreme care, electrostatically, when you are near it.Tried resetting the cuda switch on both blue and pink imacs. No success.The pink is dead and the blue starts up,then chimes, then just sits there with the power switch light pulsating. Going to find the service manual.
Try reinserting the battery, press the PMU/CUDA button once for 1 second. Next, turn on the blue iMac and immediately press and hold down Apple (CMD) + Option + Letter P + Letter R. You'll hear the startup chime for 3 chimes. Then, immediately press and hold Apple (CMD) + Option + Letter O + Letter F. This will put the machine into "Open Firmware" mode.Bought a new Pram battery. 3.63V Pink computer is stone dead. Blue computer still powers up, hard drive and dvd drive spins. Powers down. It does not shut off, seems like going in to a sleep mode.