What was found
AFTER BLOCK OUT DURING ENGINE START, PROBE HEAT EICAS MESSAGE ACCOMPANIED BY LT AUX PITOT AND F/O PITOT DISCREET LIGHTS ON OVERHEAD PANEL. AIRCRAFT BACK TO BLOCK AND GROUNDED. REMOVED AND REPLACED RELAY K241, PER SWPM 20-81-00 REF WDM 30-31-11 AND MISC TEST PANEL PER B767 AMM 24-22-06. OPERATIONS NORMAL OF ALL PROBE HEAT SYSTEMS, PER B767 MM 30-31-00. A/C REMAINS RVSM COMPLIANT AND ETOPS 180. AIRCRAFT RELEASED.