crwdns2934241:0crwdne2934241:0 Lee Parker

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That is a problem with older TI-84s.  Usually the prongs from the batteries to the circuit board pads have worn away the copper p;ating pn the pad.  If you want to try this, you can remove the rear cover and bend the prongs so they are touching freah copper.  This will usually fix the problem.  There are numerous articles on Youtube that detail how to do this.

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