Haier HL22KN1 Service Manual page 42

Display trouble（exceptional
screen）
Exceptional screen
Check if the cable is correct
and connected tightly
Y N
Check if the LCD
panel is ok
N Y
Check the circuit of output and
the CN2/Jack
N
Y
Change the cable for
Panel connector
Check the power supply for Change or repair the
Change LCD
U5 and the clock circuit Damaged components