Sharp LC-32LE440U Service Manual page 24

Does not the sound of the audio signal input to input (Component) go out?
MAIN UNIT:
v
Is the audio signal properly sent to pin (8) and pin
(10) of CN1202?
YES
Is the audio signal properly sent to pin (68)
(AIN0_R) and pin (70) (AIN0_L) of IC
U2102?
YES
Refer to "No sound output in all modes".
No sound from external input devices (1)
NO
NO
23
Check the connection to CN1202 and the external
input device.
Check the line between CN1202 and IC U2102.