What was found
(CAN) CREW REPORTED THE FUELER OBSERVED SMOKE COMING FROM REFUEL PANEL. MAINTENANCE REMOVED AND REPLACED REFUEL/DEFUEL CONTROL PANEL PER AMM 28-25-18. DURING OPS CHECK MAINTENANCE OBSERVED SMOKE VISUALLY ALONG WITH STRONG BURNING ODOR. OPS CHECK FAILED. MAINTENANCE REMOVED AND REPLACED REFUEL/DEFUEL CONTROL PANEL, THE FUEL QUANTITY GAUGING COMPUTER, JB-10 AND PCB2. OPS CHECKED GOOD.