This sounds really broken. It's hard to know if this matters or not with the supply you have, but is it possible that you've got a 9v AC supply plugged into it, when it is expecting a DC supply?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
This sounds really broken. It's hard to know if this matters or not with the supply you have, but is it possible that you've got a 9v AC supply plugged into it, when it is expecting a DC supply?