Hi Schoneschein,
I'm sorry to hear/see that. I haven't encountered this sort of problem - yet.
For what it's worth, in this thread:
https://www.mobileread.com/forums/sho...d.php?t=178058
it is claimed that the screen (if that is where the problem lies) is the same as that in the Kindle DX (but I don't know how the stylus would work then as I don't think the DX has got one). That might be one way of getting spare parts.
I'm still struggling to get a connected Obuntu install working myself. I either run into wireless or installation problems with Obuntu itself. The wireless (and so connection) problems mean that I can't install the parts missing from Obuntu (for instance, Make does not seem to work) that would allow me to the install drivers that would allow me to address the wireless problem.
I've just noticed that you mentioned in this post:
https://www.mobileread.com/forums/sho...&postcount=182
that you couldn't get the latest Obuntu image (which is the one that I've been using) to work and so had to use the earlier 8-16 image. I presume this is the image that Kirth uploaded:
OBUNTU.update-20130816.tar.gz
since the 16-08-2013 links in the first post of the images thread haven't worked in some time.
How did you install this? Did you just follow the same procedure outlined (in seaniko7's first post of the images thread and the related video) for the later 17-08-2013 image?