Daewoo DPP-42A1LASB Service Manual page 59

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