LG 29FX5REE Service Manual page 14

No
OK
Check IC11 pin71,72,73
(R,G,B out)
No
Check pin40(V out 1)
1V
p-p
No
Q501, Q503, Q504
(R, G, B out of IC11)
No Picture / No Sound
Check receiving system in MENU
& execute Auto - Program.
Store on manual - program MENU
No
Check 1.8V, 3.3V,
5V DC Voltage
OK
Check pin18
Reset Voltage
OK
3.3V DC
Check pin57, 58
SCL, SDA
OK
3.3V swing
Relace IC11
- 14 -
Is any OSD displayed?
OK
Does the auto - Program
Operate properly.
OK
No
Check SMPS Trans
Secondary Voltage
No
Check IC13
(Reset IC)
No
Check IC12(EEPROM)
& SCL, SDA, Line
Check / Replace
CPT Board component
OK
Go to
No Sound /
Picture OK