LG 21FS2BLX, Service Manual, Page: 16 / 29

- 16 -
4) No Picture/ No Sound
Is any OSD displayed?
OK
NO
NO
OK
OK
NO NO
OK
OK
NO
OK
OK
OK
P904A (R, G, B out
of IC501) P904A (R, G, B out
of IC11)
Replace IC11
Check pin8, 12 SCL,
SDA
Check IC12(EEPROM)
& SCL, SDA, Line
Check pin3 Reset
Voltage
Check IC11 pin 83,
84, 85 (R, G, B out) Check SMPS Trans
Secondary Voltage Go to No sound/
picture OK Check the waveform
pin73(H-out)
Check IC11 pin 83,
84, 85 (R, G, B out) Check receiving system in MENU
& execute Auto - Program
Does the auto - Program
operate properly
Store on manual -program MENU