Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
Brenda, if the incorrect AC adaptor has been used then the console has likely been damaged beyond repair.
The console will need to be replaced.
Is it an Ironman 250E?
You can get a replacement console and AC adaptor from: http://www.ironmanfitness.com/