Success!
She lives again!
In the end I had to swap the screen, the battery backup, the hard disk and the trackpad with the spares I had in the workshop but I eventually hit on a combination that works.
I stripped the unit completely down and got rid of the remaining Copper Sulphate that was still encrusting the various surfaces.
At one point the screen I was having trouble with did display the 'no bootable media found' screen (the one with the question mark floppy) but it only did it once and when I tested the screens on the bench that one was seemingly goosed. No matter what I tried I couldn't get the screen with the vertical yellow line to display anything again. One of the hard disks will bring up nothing but a blank backlit screen while the other one boots straight into the OS - even without the keyboard and trackpad attached. When I found a combination that worked I just combined the best of both units into one whole.
Here it is booted into 7.5.2, it seems to run quite happily:
You can read a more nicely formatted (with more pictures) version of this story on my blog
She lives again!
In the end I had to swap the screen, the battery backup, the hard disk and the trackpad with the spares I had in the workshop but I eventually hit on a combination that works.
I stripped the unit completely down and got rid of the remaining Copper Sulphate that was still encrusting the various surfaces.
At one point the screen I was having trouble with did display the 'no bootable media found' screen (the one with the question mark floppy) but it only did it once and when I tested the screens on the bench that one was seemingly goosed. No matter what I tried I couldn't get the screen with the vertical yellow line to display anything again. One of the hard disks will bring up nothing but a blank backlit screen while the other one boots straight into the OS - even without the keyboard and trackpad attached. When I found a combination that worked I just combined the best of both units into one whole.
Here it is booted into 7.5.2, it seems to run quite happily:
You can read a more nicely formatted (with more pictures) version of this story on my blog