What was found
WHEN MED CLOSED, HAD YELLOW CABIN DOOR OPEN & CHECK DOORS CAUTIONS. ACCOMPLISHED CHECK DOORS QRH. NO LIGHTS FUNCTIONING ON DOOR LIFT PANEL. PUSHED CANCEL BUTTON & DID NOT GET THE CHECK HANDLE/PUSH TO OVERRIDE BUTTON TO FLASH. INSPECTED MED THRESHOLD WIRES & FOUND NO DISCREPANCY. PWR ACFT & VERIFIED NO LIGHTS ON INTERIOR MCD SWITCH. DOOR OPS NORMAL BUT PANEL HAS NO BACKLITE WORDS. CHECKED WIRES AT JC031 & FOUND GOOD POWER & GROUND. INSTALLED NEW PCB WITH NO CHANGE REINSTALLED ORGINAL PCB IAW AMM 24-60-40. OPS CHECK GOOD INSTALLED NEW DOOR SWITCH AND DICOVERED TO BE WRONG PART. REMOVED IS REV F SWITCH ADDITIONAL LIGHTED WORDS . INSTALLED CORRECT REV F SWITCH WITH GOOD OPS CHECKS IAW AMM 52-10-01.