Thank you for your kindly provided information and proposal regarding my Kindle.
@Quoth My story is a little bit different, because the Kindle not boot, boot loop or is in working condition(but not in constant) even if is connected to the power source. I also try and removed the whole wifi / 3g module, but the Kindle doesn't boot any more.
@eddie.t.h I talked with one of my friend of main which has hot air soldering station and we will try to rehot the processor, as a final try I think
Guys, once we try will update you with the final status.