What was found
FLIGHT 7659 TO ANC, AIR TURN BACK. DISCREPANCY, ALMOST IMMEDIATELY AFTER TAKEOFF, THE CREW NOTICED A STRONG BURNING SMELL IN THE COCKPIT. ELECTED TO RETURN TO KODIAK. NO EMERGENCY WAS DECLARED & ACFT RETURNED TO RAMP SAFELY. AFTER EXTENSIVE TROUBLESHOOTING, MX WAS UNABLE TO DUPLICATE DISCREPANCY. ACFT WAS RETURNED TO SERVICE.