Tennessee Code Title 2. Elections § 2-7-119

(a) If a voting machine being used in an election becomes out of order, it shall be repaired if possible or another machine substituted as promptly as possible.

(b) If repair or substitution cannot be made and other machines at the polling place cannot handle the voters, the paper ballots provided for the polling place shall be used and, if necessary, ballots shall be provided under § 2-7-108.

(c) If a voting machine becomes out of order while it is being used, the crosses (X) shall be cleared from its face by the names of candidates and by questions. The voter may then vote on another machine or by paper ballot as the judges decide.