Haier HL42XR1 Service Manual page 55

B/L
open
B/L
down
F/M
wire
shut
Without backlight
B/L shutdown
sometime
F/M in
B/L ,white,batck
Rotundity or
wirelike
Operation abnormal or systemic noise
Short bitween lamp housing and wire, Because
consume power too much
F/M in B/L unit
Failure Mode
Part Name Description Phenomena Failure cause
Mechanical
or B/L
Light
leakage
Uniformity
Mount hole
Brightness at
bottom of LCM
brighter than
normal
B/L brightness
asymmetric
Lack screw or
screw damage
B/L unit badness
Sheet in B/L unit is uneven
*Lack screw
Screw damage
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