Near the top of the forum listing, you will find the Hitec Direct support listing. I would recommemd going there. Also, don't let your batteries get that low while the radio is on, you probably scrambled the processor. Can you go back to a default setting and adjust from there> You can in other mfg .

Try this:
http://www.rcuniverse.com/forum/forumid_53/tt.htm
and good luck.