What was found
AIRCRAFT WAS GROUNDED: FLIGHT AIR INTERRUPTED BACK TO JFK ON ACCOUNT OF ELECTRICAL SURGES IN COCKPIT, FIRST OFFICER PANEL FAILURE. NO EMERGENCY DECLARED. SUPPLEMENTAL INFORMATION: MAINTENANCE FOUND WIRE GROUNDED BETWEEN CONNECTOR D31016P PIN 11 AND CONNECTOR D21031P PIN 27 ON P310 AND P210. REPLACED D31016P IAW SWPM 20-61-11 AND WDM 24-32-11 STANDBY PWR CHECKED NORMAL IAW AMM 24-30-00. ALL MESSAGES CLEARED. (CLOSED)