Troubleshooting - Toshiba 42HP83 Service Manual

NO SOUND (All source)
(A-OUT)
P601 #2 (Lch )or #4(Rch) OK?
NG
(A-OUT)
P610A #1 (Lch) or #2 (Rch)
OK?
NG
(MA)
H002 #18 (Lch), #16 (Rch) OK?
NG
(MA)
P102B #8 (Lch), #9 (Rch) OK?
NG
(MA)
P102B #4 (Lch), #5(Rch) OK?
Check the Mute-Circuit
or replace the H002.
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TROUBLESHOOTING

Disconnection of SPK,
OK
or the defect of SPK
Change the SPK.
(A-OUT)
OK
Q610 #5 (MUTE) is Low (0V)?
Made the mode of SPK-ON
on a menu screen.
Or check Q615.
Check the QS102 and
OK
peripherals.
Check the QD05 and
OK
peripherals.
Check the QV01 and
OK
peripherals.
– 18 –
OK
NG
Check the MUTE_AUDIO
line.