Doesn't come on at all
My daughter bought her calculator o8/06 and used it some that year. It began dying and she left it with her teacher at the end of the year and all summer. She retireved it this August, replaced the batteries, checked the back up battery and it doesn't turn on.
Office Equipment & Supplies - Texas Instruments - TI-83 Plus Calculator
Answers & Comments
Look for a reset button on the unit.
also go here for the manual it may offer solutions
http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=17
Robert
please rate this solution... thanks