Following
my previous issues with my Kindle 4, my mum happened to pass me a non-functional Kindle 4 for spare parts. My original is a ship of Theseus, but working fine, so I've now got a spare to play with.
It charges, powers on, and I even dumped the books that were on it (a bunch of sci-fi omnibuses, much better than the usual teen romance rubbish I've found on old Kindles). However, the screen is blank and displays nothing. It appears to be undamaged, no marks anywhere.
I've opened it up, but no clues there. Does anyone here know where I should look on the circuit board for troubleshooting this? I'm guessing the motherboard is generally fine, as it still boots, charges, connects to USB and read/writes. Replacing the screen is likely not worth it, but as it is quite nice and unscratched, I'd like to save it from ewaste if I can.