What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING CLIMB A STRONG BURNING ELECTRICAL ODOR WAS REPORTED NEAR THE L1 DOOR. NO OVENS OR CHILLERS WERE IN USE. ODOR REMAINED WITH VARYING INTENSITY UNTIL AFTER LANDING. MAINTENANCE ACCOMPLISHED CARD 05-96-70. AFTER T/S, FOUND RELAY K147 FAULTY. REMOVED AND REPLACED RELAY IAW SSM 21-45-02. ALSO REMOVED AND REPLACED L1 AND R1 DOOR HEATERS IAW AMM 21-45-21, OPS CHECK NORMAL. NO ELECTRICAL ODOR AT THIS TIME.