I have an ADT Safewatch pro 3000, and I recently factory reset it (went to programming menu and typed *97). The screen displayed 97, but it wouldn't let me exit out of the programming menu with *99. After several minutes of this, I went and unplugged it. When I plugged it back in, it beeped, but the screen remained blank.
I'm not sure if I broke it, or something else happened. What can I do now? Is there a way to fix this?