LG 32LB530B, Service Manual

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6. MHL Video
Check input signal format.
Is it supported?
Check MHL Cable conductors
for damage or open conductor.
Check MHL Signal (R214, R215)
Check JK803
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check MHL Signal
Check other set
If no problem, check signal line
ok
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
Replace Main Board
No
Check CD_Sense, Cbus, Vbus
No
Replace R810, R802, R831, R830, IC802, D800