[chirp_users] JT270 M Won't Power Up

I just made a first attempt at programming the JT-270M, and all went well at first - the radio took the programming, so the cable seems good (and it works fine with two other radios), the programming uploaded to the Jetstream, but now the Jetstream won't power on at all! I looked through the help and couldn't find anything about the problem. This is my first post asking for help, so I hope I am going about it the right way. Thanks for your time and for any help! Gene KD4CNO