Daewoo DPP-42A1GCSB Service Manual page 59

Trouble Shooting
11-10. Others
A) Set Is Making Unusual Noise
-> Check the connection of Power PCB and Module. If they are OK,
replace the Power PCB and check the symptom again.
B) Occasionally, the set does not operate normally.
Turning off and on the AC power make the set to operate normal again
-> Upgrade the software first.
If you still see the same symptom, replace the Main and Sub B/D.
C) Images are abnormal
-> Check the default values of service mode and user mode. If they are OK,
replace the Main and Sub B/D.
If they are not OK, upgrade the software and check the symptom again.
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