No Sound (During The Reception Of Tv (Analog) Broadcasting); No Sound (During The Reception Of Tv (Digital) Broadcasting) - Sharp LC-40LE820E Service Manual

LC-40/46/52LE820E, LC-40/46LU820E
Does not the sound go out though the picture has come out when UHF/VHF is received?
Is a SIF signal output from pin (13) of TUNER (TU1101)?
Is a SIF signal input to (AB27/S_IF) of IC3302 (Digital AV decode
& Main CPU) from pin (13) of TU1101?
Refer to "No sound output in all modes."
Does not the sound go out though the picture has come out when DTV is received?
Is IF signal output to pins (10, 11) of TU1101?
Is IF signal sent to pins (14, 15) of IC1102 (Multiplexer)?
Are pins (9, 10, 11) of IC1102 at H/L?
Is IF signal sent to pins (41/INM, 42/INP) of IC1106?
Is signal output to pins (17/CTS_CK_60MHz, 18/CTS_SY, 19/
CTS_VA, 21/CTS_D0) of IC1106?
Is signal sent to pins (11/TS_DATA1, 12/TS_DATA2, 13/
TS_DATA3, 14/TS_DATA4) of IC4405?
Is signal output to pins (122/TS_VALIDO, 123/TS_CLKO, 124/
TS_DATAO, 124/TS_SYNCO) of IC4405?
Is signal sent to pins (A30/TS_CPUIN_VAL, B30/
TS_CPUIN_CLK, C30/TS_CPUIN_SYNC, C29/TS_CPUIN_D0)
of IC3302 (Digital AV decode & Main CPU)?
Refer to "No sound output in all modes."

No sound (during the reception of TV (ANALOG) broadcasting)

YES
YES

No sound (during the reception of TV (DIGITAL) broadcasting)

YES
YES
H
YES
YES
YES
YES
YES
NO Check the tuner and its peripheral circuits.
Replace as required.
NO Check the line between TU1101 and IC3302.
(Q1104, etc.)
NO Check the tuner and its peripheral circuits.
Replace as required.
NO Check the line between TU1101 and IC1102.
Is IF signal sent to pins (AA29/D__IF_P, AB29/D__IF_N) of
IC3302 (Digital AV decode & Main CPU)?
Refer to "No sound output in all modes."
NO Check the line between IC1102 and IC1106.
NO Check IC1106 and its peripheral circuits.
NO Check the line between IC1106 and IC4405.
NO Check IC4405 and its peripheral circuits.
NO Check the line between IC4405 and IC3302.
7 – 3
L
YES