What was found
AFTER T/O LANDING GEAR REQUIRED LOCK OVERRIDE TO RETRACT LANDING GEAR, DIVERTED TO PHX. RECENT HISTORY OF INTERMITTENT RT MLG INDICATION PROBLEMS & GEAR LEVER LOCK SOLENOID CHATTERING PROBLEMS. TROUBLESHOT, REPLACED SEVERAL COMPONENTS, CAUSED BY EMI FROM THE PASSENGER ENTERTAINMENT SYSTEM WIRE HARNESS RT SIDE OF THE ACFT (AWA HAS PREVIOUS EXPERIENCE WITH THIS PHENOMENON). WIRE HARNESS PLACED ON ORDER, PRE-RECORDED PASSENGER ANNOUNCEMENT SYSTEM PLACED ON MEL 23-31-2, COND 1. C/B'S E-2, C-6,C-7 & C-8 WERE PULLED & COLLARED. MX INSPECTED ALL SEAT WIRE HARNESS RT SIDE, REPLACED WIRE HARNESS SEAT 7D & 30D DUE TO CHAFING & BROKEN WIRES. ALL OTHER HARNESS FOUND TO BE SERVICEABLE. MEL CLEARED.