Read LG 50PG60D-SA (CHASSIS:PB82C) Service Manual online
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Digital TV Video Trouble Shooting
Check RF Cable
Check TP Clock, Data, Sync
R925 (38.1MHz), R804, R803
Maybe Tuner(TU800) has problems
Check BCM3553 Output TP Clock,
Data, Sync
R153, R155, R152
Check BCM7412 Clock,
Hsync
,
Vsync
R1088 (
Typ
. 74.25MHz), R1087, R1086
Y
Y
N
Check Tuner 5V Power
IC810 #3 Pin
Replace IC810
Y
N
Y
Maybe BCM3553(IC100) has problems
N
Maybe BCM7412(IC1000) has problems
N
Check PLD Clock,
Hsync
,
Vsync
R1102 (
Typ. 74.25MHz), R1100, R1101
Y
Redownload
PLD file or replace
N
Maybe BCM3553(IC100) has problems
Y
Check D805 color
Bad Tuner. Replace Tuner.
None
red
Check BCM7412 Input Clock
R107 (27MHz)
Replace it
N
Y
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