Postagem original de: Sarah ,
I don't know if you are still looking for an answer to this question, but I have one of these and it can be quirky like that too. Did you try pulling it apart, and pulling the batter connection out? If you disconnect the battery, there would be no way for it to run any longer, and maybe if you plug it back in, it would start working again. Mine does weird things like that too. Then it will run normally for months.