Big patch on screen / one cabinet is blank OR one cabinet is flickering
Step 1: Check if power is received at the cabinet from which screen
is blank. If it is connected with power loop & power is not received, check
if it is has got burnt / damaged & change it using spare power loop cable
Step 2: If power is received at the cabinet from which screen is
blank then check if power is received on the receiver card of that cabinet (Red light must be ON & stable).If not, check the SMPS from which receiver
card is receiving power is ON or not. If NO, then change that SMPS.
Step 3: If power is fine & data is also received, change the
hub card / receiver card.
Step 4: (AS PER DATA PATH, IF CABINET IS AT THE END OF SCREEN, FOLLOW
After practicing above 3 steps
if issue is still unresolved, check the continuity of data loop cable (cat6
from receiver card of working cabinet to receiver card of cabinet from which
screen is blank). If found faulty, change it.