What was found
FLT 779 - LGA - IN CRUISE AT 35,000 FEET NEAR WILMINGTON NC, LOST ALL ELECTRICAL POWER. SELECTED EMERGENCY POWER DECLARED EMERGENCY, BEGAN DIVERSION TO MYR. PERFORMED QRH PROCEDURES GOT LEFT GENERATOR ON LINE, HAD X-TIE LOCKOUT. LANDED SUCCESSFULLY IN MYR. PRIOR TO LOSS OF ELECTRICAL, HEARD AND FELT LOW RUMBLE AND VIBRATION IN A/C. ALL ENGINE GEN VOLTS AND FREQS NORMAL. ALL ENGINE INDICATIONS NORMAL. NEVER ABLE TO GET RT GENERATOR ON LINE. REMOVED AND REPLACED NR 2 CSD IAW MD 80 MM 24-10-01 SERVICED CSD AND CAVITY OPS AND LEAK CHECK GOOD. (M)