Hello. Thank you for coming to JustAnswer.
Sorry for the wait. My name is Michael. I will be helping you with your question today.
This couild be failed batteries. That is what the behavior suggests. But what I would suggest doing is removing the batteries completely and leaving the printer without power for several minutes. Then replace the batteries and see if the result is different. Even if you are certain that the batteries should be OK, I would suggest trying fresh batteries as well. Let me know how you make out.