What was found
FLT 641 - JFK-SFO - DIRECT LTV WAS INTERMITTENT, THEN INOP. DID NOT RESPOND TO FULL RESETS, MOVIES WORKED. AFTER LANDING F/A'S CALLED TO REPORT AN ELEC/BURNING SMELL IN CABIN. AFT AVIONICS RACK POWER WAS SELECTED OFF AND SMELL DISSIPATED (LIVE TV SYSTEM-ALL). UPON INSPECTION NO SMELL NOTED IN CABIN. NO ECAMS OR FLT DECK EFFECT NOTED. ACCOMPLISHED TSM TASK 24-00-00-810-823, COMPLIED WITH TSM 23-39-00-810-801, NO FAULT FOUND, NO SMOKE ODOR NOTED. AFTER OBSERVING SYSTEM FOR ONE HOUR, LTV'S OPS CHECK GOOD IAW LTV MM 44-20-17. LTV REACTIVATED. OK FOR SERVICE.