Blinking green light, will not reset, black screen

After a recent electrical storm my Tivo has a constantly blinking green light and will not reset. I am interested in a possible remedy without having to do the "exchange" with TiVo and wish to retain my lifetime service.
I have the Series 3 HDTV DVR (about 4-5 yrs. old).

Blinking green light, will not reset, black screen