What was found
ETOPS - BTB > DURING ENGINE 2 START UP GOT ENG OVSPD PROT FAULT FOLLOWED BY: FO AOA HEAT, FO PITOT HEAT, FO TAT HEAT, FO STATIC HEAT. REMOVED AND REPLACED PHC 2 PER AMM 30-31-34. BITE CHECK OK. OPS CHECK W/ PROBE/ WINDOW HEAT SWITCH OK. CHK'D WIRING ON PHC 2 -- ALL GOOD ON GND- NO FAULT W/ WIRING