I have had my phone for around 10 years and recently it has been showing signs of old age. The recharge light in the base flickers, and when I enter the phone # and press "send" it acts like it can't remember what I have entered. I picture a little old white haired lady doddering down the hospital corridor with her walker and trying to remember where she was going. The serial # is 134044682. Any help? Is she dying?