What was found
ORD - FLT236 - DURING CRUISE, EN ROUTE FROM PHL TO ORD, CREW REPORTED NUMEROUS INSTRUMENTS AND NAV-AIDS FLAGGED ON THE FIRST OFFICER'S INSTRUMENT PANEL. ALSO, TCAS AND RADAR INDICATOR WAS BLANK. A SLIGHT ELECTRICAL/SMOKE ODOR WAS NOTED. FLIGHT LANDED WITHOUT INCIDENT AT ORD. MAINTENANCE PLACED THE NR 2 ENGINE GENERATOR ON MEL 24-1, THEN ENDED UP REPLACING THE NR 2 ENGINE GENERATOR CONTROL UNIT. RECONNECTED NR 2 ENGINE CSD AND GROUND RAN GENERATOR. OPERATIONAL CHECK GOOD. FREQUENCIES AND VOLTS NORMAL. CLEARED MEL 24-1.