I have a Kindle DX that hasn't been used in a few years. I decided to try to get some use out of it but it seems to be stuck on the critical battery screen and will not turn on. The little yellow charge light does turn on and turns off after a few hours.
First, I tried a few different USB cables and chargers including wall and my computer. The DX does not mount when connected to a computer.
Next, I tried contacting Amazon and they offered to give me a partial refund of $0.00 if I send it back to them.

We tried every combination of holding the Power and Home buttons down for 10s, 15s, 30s and up to a minute.
Then I started checking out forum post which suggested to press the manual reset button on the top inside of the tablet. That did not work either (tried holding it down for various times including combinations with the Power and Home button).
I figured the battery is shot from sitting too long. I decided to buy a new one off ebay that was labeled OEM and that didn't work either.
I am out of ideas unless if there is a way I can connect to the serial port inside and reset it that way. Does anyone else have any ideas?
I want to use this mainly for the display in some electronic projects. I am pretty comfortable with software and circuits.