LG PF-43A20, Service Manual

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NO SOUND
(PICTURE OK)
Check Sound system of
station MENU OSD
(Manual Programme)
Is the voltage at Pin 25
of IC1 5V(High)?
Is the SIF signal at Pin 24
of ICI1 normal?
Are the Audio signal at Pin
28, 29 of ICS11 normal?
Are the Audio signal at Pins
1, 18 of IC600 normal?
Are the Audio signal at Pins
10, 13 of IC600 normal?
Check/Replace
P601, P602, Speaker
Check/Replace
ICI1
Check/Replace
ICI2, ICS3, ICS11
Check/Replace
IC600
Check the voltage
at 9, 11 of IC600
Is the voltage at pin 25
of IC1 0V(Low)?
BG/I/DK M
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes