Daewoo DP-42SM Service Manual page 33

Main PCB Trouble Diagnosis
7. When Remote Controller does not operate
1. IR Receiving BLOCK of VIDEO PCB has a trouble.
2. Check VIDEO PCB
Check start
Y
Does LED next to Power
S/W turn on in Red?
Y
Does Remote Controller
operate?
Y
Does Set turn on with
Key operation?
Y
Whenever push the botton of
remote controller, does 2nd Pin of
P602 output?
Y
1. Confirm AC connection.
N
2. Confirm Power S/W ON.
3. Check other PCBs.
N
Check the Battery of
Remote Controller
N
1. Check the connection to VIDEO PCB
2. Check VIDEO PCB
LED PCB has a trouble.
N
So, Exchange LED PCB
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