The Kindle is 18 months old, so out of warranty.
I think this is a terminal problem.
The lesson to be learnt is ‘however good you may think your Kindle case is (my Kindle was kept between two sheets of plywood like material in an envelope), if you keep it for more than three months in a rucksack that is also used as a sitmat, it may eventually fail’.
Judging by what I can see of the screen, at least it seems to have saved the house from the litter of 11 books that have been read and a further 23 that may have been partly read or are ‘pending’ or for reference (eg ‘phone and camera manuals – the ability to keep PDF files on the Kindle is very useful).
