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Repair Process
PDP TV
Symptom
1.No sound(
If HDMI Input only have no sound, upload EDID data)
Check
"Speaker ON/Off" setting
in OSD Menu
2.Sound distortion & sound drop
Check Input signal
→Cable connection
→Cable open
Sound?
- RF & external
(HDMI,SCART,,,)
Check whether Problem happen
in same output of other equipments or not.
(By connecting same output cable of other equipment)
→ DVD Player ,Set-Top-Box, different maker TV etc
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Only for training and service purposes
C. Sound Problem
No sound/ Sound distortion
☞A25
N
Check Speaker
Normal
jack connection
Sound?
& Speaker Cable open
Y
Close
Check
N
Normal
AVL off/on
Clear voiceⅡ off/on
Y
Close
Cause is RF Signal's problem (Case 1)
Cause is Equipment's problem (case 2)
N
Normal
Sound?
Y
☞A22
Close
☞A2
Problem in all input
Normal
Problem in only DTV
Sound?
N
Problem in external input
Y
(SCART,HDMI,,,)
Close
N
Normal
Sound?
Bulletin?
Y
Explain customer that
8
Making
Revision
Y
Apply
SVC
SVC Bulletin
Bulletin?
(S/W Upgrade etc)
N
Check 17V
Normal
(Audio IC B+)
voltage?
on Power B/D
Y
Check Audio IC Short
Replace Main B/D
Y
Apply
SVC
SVC Bulletin
(S/W Upgrade etc)
N
8/10
Close
Y
Normal
Sound?
N
☞A23
N
Check Power B/D
Replace Power B/D
Y
Normal
Close
Sound?
N
Check Audio IC
Replace Main B/D
LGE Internal Use Only
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