60PS80BR-TA (CHASSIS:PP91A) - LG TV Service Manual (repair manual). Page 30

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Making 
Revision 
2009. 2 . 1
4/9
PDP TV
Symptom
A. Picture Problem
Picture broken/Freezing
Repair Process
Y
N
A21
4
N
Check RF Signal level
Normal 
Signal?
Check RF Cable 
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
Booster menu
OnOff: Check
Off
On: Check
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc
SVC 
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal 
Picture?
Y
N
Y
Close
Normal 
Picture?
Y
Close
■ Menu→Setup →Booster
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→Setup→Diagnostic)
- Signal strength (Normal : over 50%)
- Signal Quality  (Normal: over 50%)
Normal 
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air) 
N
N
Normal 
Picture?
Y
Close
N
※ ’09 years new model apply chip tuner
so, chip tuner is soldered on main PCB
[ Chip Tuner: IC500(XC5000) ]
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