Blinked Phone: Blinking Red Light
A "blinked" phone is a handset that will not power on and has only a red blinking light on the display. This problem has been known to occur with older K610, K790 and K800 Sony Ericsson handsets.
A possible, though not guaranteed, solution is an EROM update followed by a firmware update.
Sony Ericsson has released an official service bulletin concerning this issue.

