What was found
WHEN LANDING GEAR LEVER PLACE TO OFF DURING AFTER TAKE OFF CHECK FROM MMMY THE RIGHT MAIN AND NOSE GEAR EXTENDED WITH GREEN LIGHTS ON. LEFT MAIN STAYED UP. DOORS AND GEAR ANNUNCIATORS AND GEAR DISAGREE EICAS WERE ON. ALL GEAR RETRACTED AND DOORS CLOSED WHEN GEAR LEVER MOVED TO UP IAW QRH CHECKLIST. REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER IAW B-767 AMM 32-31-01-4. PERFORMED OPERATIONAL TEST LANDING GEAR CONTROL SYSTEM, OPERATIONAL TEST LANDING GEAR ALTERNATE EXTEND TEST ANTISKID SYSTEM OPERATIONAL TEST AND OPERATIONAL TEST OF THE GROUND PROXIMITY WARNING SYSTEM IAW B767 AMM , OPS CHECKS NORMAL