What was found
IN CRUISE, NR 1 GENERATOR LIGHT FLICKERED, ESSENTIAL SWITCHED TO NR 3, NR 3 GENERATOR FAILED. ALL LIGHTS FLICKERED, NR 1 GEN FAILED, AND NR 2 GEN DROPPED OFF LINE. STANDBY POWER SELECTED, NR 2 GEN PUT BACK ON LINE. ELECTRICAL SMELL NOTED IN COCKPIT. ONE GEN OPERATION WAS EXECUTED. AIRCRAFT LANDED AT DTW WITHOUT INCIDENT. FOUND EVIDENCE OF SHORTING IN NR 1 GENERATOR CONTROL PANEL. REPLACED PANEL, OPS CHECK NORMAL.