Replaced HDD, USB doesn't work.

eMac 1.42

Hey all,

My eMac 1.42GHZ was starting to show its age so I decided to upgrade the hard drive and the optical drive.

The teardown / upgrade went ok - I fix laptops but this was my first eMac. When I turned it on after the upgrade, I reassuringly hear the Apple sound and the screen changes to what you would get when an os isn't installed and I can hear both of the drives, but USB doesn't work.

To be more specific, the ports are getting power (Plugged in a bus powered drive) but the keyboard doesn't work - I try to eject the drive and nothing happens, same when I tried a pram reset.

I've tried:

The keyboard on another system - it works fine.

Multiple USB ports.

External drive in usb ports - the drive powers up fine.

Reseating the IDE & power connectors for the optical drive - I can hear the drive power on so I don't think it’s a power issue.

Different IDE cable.

While I was moving the machine the cover that flips down when the optical drive is ejected broke off. Whilst I would like to fix this at some point, at the moment this is a minor concern.

I'm hoping someone who has done a few of these eMacs has some idea about something that I've forgotten to plug in; I've had a good look inside for things that I might have missed and there’s nothing obvious, but then again things like this are only obvious once you've found them.

Any pointers at all would be great.

Cheers.