What was found
THE RADIOS & VEMD WENT OFF LINE & HE COULD SMELL SMOKE. REMOVED INSTRUMENT PANEL HOOD & INSPECTED THE WIRING FOR THE RADIOS & VEMD FOUND NO DISCREPANCIES. REMOVED THE 30 ALPHA PANEL & INSPECTED WIRING NO DISCREPANCIES. INSPECTED 31 ALPHA PANEL WHICH HOUSES THE CB`S OF THE EQUIP THAT WENT OFF LINE. PP5 & PP6 ARE THE BUSS BARS THAT FEED POWER TO THESE CB`S & FOUND NO DISCREPANCIES. GAINED ACCESS TO THE MASTER ELEC BOX IN THE AFT BAGGAGE COMPARTMENT & INSPECTED ALL COMPONENTS AS WELL AS CHECKING THE FUSES TO PP5 & PP6. ALL LOOKED NORMAL. INSPECTED THE ARMATURE & BRUSHES OF THE STARTER GEN & ALL LOOKED NORMAL. APPLIED POWER TO THE ACFT & CHECKED THE VOLTAGE AT PP6 & WAS ONLY GETTING 8 VDC THEN CHECKED VOLTAGE AT THE FUSE IN THE MASTER ELEC BOX & WAS ONLY GETTING 11 VDC. DETERMINED THAT A FAULTY BATTERY WITH LOW VOLTAGE IS THE CAUSE FOR THE RADIOS & VEMD GOING OFF LINE. THE FUEL BOOST WAS NOT FUNCTIONING WHICH IS SUPPLIED POWER FROM PP6. THE BATTERY WAS REPLACED & ALL THE RADIOS, VEMD & FUEL BOOST PUMP WERE OPERATIONAL. THE VEMD SELF-TESTED NORMAL WITH NO GOV LIGHT ILLUMINATING. A GND RUN WAS PERFORMED WITH ALL SYS OPERATING NORMAL. THE STARTER GEN WAS SUPPLYING THE PROPER VOLTAGE TO THE SYS. IN CONCLUSION I COULD ONLY DETERMINE THAT THE SMELL EXPERIENCED BY THE CREW WAS A HOT SMELL COMING FROM THE VEMD WHICH HAD NO COOLING AT THE TIME.