Someone did a photo-documented dismantling of their 770, which can be found here:
http://www.uselessinfo.pwp.blueyonde...mantlen770.htm

or go to this (http://internettablettalk.com/forums...ad.php?t=15599) thread for photos of the LCD alone. What looks like the controller is in that flex ribbon attached to the screen itself - which means doing any easy swap involves swapping both screen AND the controller. So it looks like any dead 770 that would be useful to me would be non WSOD. If anyone has one floating around, please let me know.