Repair Flow Chart - Haier L42S9 Service Manual

42"LCD TV

5. Repair Flow Chart

No Picture (LED Orange)
Check key board/IR board
Check 24V power supply
Check main board Standby power supply
No picture
OK
OK
OK
OK
Check U4101
OK
Check U4201
OK
2
Check I C bus
NG
Change key board/IR board
NG
Check the power supply circuit
NG
Change U7101
NG
Change U4101
NG
Change U4201
NG
2
Check I C communication
33
Haier L42S9