Sharp LC-50LE442U Service Manual page 23

Does not the sound go out though the picture has come out when UHF/VHF is received?
MAIN UNIT:
Is the DIF signal output from pin (10) and pin (11) of
TUNER(TU9102)?
YES
Is the DIF signal sent to pin (58) and pin (59) of IC
U2102?
YES
Refer to "No sound output in all modes"
No sound (during the reception of TV broadcasting)
NO
.
Check the tuner and its peripheral circuits. Replace as
required.
NO
Check IC U2102 its peripheral circuits.
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