@equinox1: Be sure to fully recharge your battery. A bricked kindle does not "sleep" and can fully DISCHARGE the battery while it is sitting idle. Try keeping the USB cable plugged into a charger or computer while debricking it with the serial port.
Also, several kindle models seem to have unreliable GND connections on the serial port. It helps to have a USB cable attached to the same host PC as the serial adapter (for an extra ground path). Try that.
Last edited by geekmaster; 09-28-2012 at 10:38 AM.