OMG! disaster. Just when I thought things could only get better...
I managed to buy a half-broken 6000, which worked apart from the screen which had bust and leaked - backlight gone. However, you could see it was working, touchscreen OK, and via usb networking tell everything *seemed* fine. The case had cracks at corners, with little flat areas where it bounced as it hit the ground falling from on top of someone's roof (apparently there was a choice between falling off or dropping the Z). I didn't find out what the guy was doing on his roof with his Z!
My theory was that I could thus build one good Z out of the two broken ones. Very carefully took both apart, swapping the motherboards, took an extra pic of the new motherboard as it was slightly different.
Reassembled the good one, and it's dead. Dead as dead can be. Won't power up, unresponsive to holding power, pressing reset, usual things. Naturally, the doubly-bust Z with broken SDRAM and bust screen is also dead.
I'm now pretty depressed. I can only wonder if there's something I managed to disturb. There are microswitches onboard to detect the battery compartment locks, but these seem OK. The backup-battery switch is ON.
Can anyone suggested ANYTHING? I checked the keyboard, and the two LCD connectors, and they seem fine.
sigh.