Hi Guys, I pulled a 20" G5 Imac out of the junk. At home I figured it would work - it chimes and then works an obviously broken hard disk without success until it turns off. The real problem here is the smashed screen. Months back I found a 17" G5 Imac with missing hard drive that would not turn on. So my question is can I fit the logic board and power supply of the 20" into the smaller 17"?? Or are all components of different size?