Haier LTF42M1C Service Manual page 33

No Power (No LED Indicator)
Check power cord and board interface
OK
Check F901, BD901, C929
OK
Check IC901
OK
Check T901
OK
Check D910, C945, C946, C947
No Display (LED Indicator Green)
Check the source
Check LVDS cable
Check IC904 circuit
Check D907, D904
Check U400
NG
NG
NG
Replace T901
NG
OK
OK
NG
OK
NG
Check IC902
OK
NG
Check T902
OK
OK
OK
NG
Check panel
NG
Plug in power cord and interface
Replace F901 or BD901 or C929
Replace IC901
NG
Replace D910, C945, C946, C947
Reset source
NG
Reset LVDS cable
Replace IC904 or the correlative part
Replace IC902 or the correlative part
Replace T902
NG
Replace D907, D904
NG
Replace main board
Replace panel
33