Hi Frank, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, please try cleaning the battery terminals/contacts using foam swabbed lightly dipped in household alcohol as this is the only easy user doable attempt.
If not corrective, then the described symptom almost always would point to an internal hardware issue.
Are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?
Alternatively, consider the services of repairs shops specializing with these devices. Please click HERE.