What was found
MAIN CABIN DOOR EXIT SIGN INOP. NO MEL RELIEF. REMOVED EXIT SIGN FOR TROUBLESHOOTING. CONNECTED FC2031 TO A 28VDC POWER SUPPLY & UNIT FUNCTIONS. PLUGGED FC2031 BACK INTO ACFT WIRING & LIGHT STILL DIM, NOTICED WITH MOVEMENT OF WIRE HARNESS, LIGHT WOULD FLICKER BETWEEN NORMAL BRIGHTNESS & BACK TO DIM. ON FURTHER INSPECTION OF WIRING HARNESS, FOUND A DIODE NEAR CONNECTOR JC2066 WOULD BE MOVED & GENTLY FLEXED, & EACH MOVEMENT CAUSED EXIT SIGN TO FLICKER. CHECKED DC2013 DIRECTLY NEXT TO DC2014 & LIGHT DID NOT FLICKER. CAUSE TO BE AN INTERMITTENT LOSS OF CONTINUITY AT DIODE. R & R DIODES DC2014 & DC2013 IAW SPM 20-30-15. INSTALLED CABIN DOOR EXIT SIGN IAW IMM 25-20-33. OPS CHECK GOOD.