Troubleshooting BA II PLUS

hi guys,

as many of you i am preparing Part I exam in this Oct. Recently i found an issue with my calculator, is that after hit computing I/Y button, the calculator just turned black, then reset automatically.

I am curious has anyone else had this happened before? considered it’s a pure technical issue, not related to the variables being input.

I am guessing it’s because of the battery? considering to buy a new one tho

Never seen this case before. Better change.