Haier LT42M1CF Service Manual page 31

42"LCD TV
No Power (No LED indicator)
Check power cord and board interface
OK
Check F901, BD901, C907
OK
Check IC902, IC901
OK
Check T905
OK
Check D928, C936, C956, D927, C955,C934
No display (LED indicator green)
Check the source
Check LVDS cable
Check IC902 circuit
Check IC901
Check D901, D902，D928
NG
NG
Replace IC902 or IC901
NG
Replace T905
OK
NG
OK
NG
OK
NG
OK
NG
Check T905
OK
OK
NG
Check U400
OK
NG
Check panel
NG
Plug in power cord and interface
Replace F901 or BD901 or C907
NG
Replace D928, C936, C956, D927,C955,C934
Reset source
Reset LVDS cable
Replace IC902 or the correlative part
Replace IC901 or the correlative part
Replace T905
NG
Replace D901, D902，D928
Replace main board
Replace panel
31
Haier LT42M1CFA&LT42M1CF