Read Sharp LC-42AD5E (serv.man4) Service Manual online
LC-42AD5E/RU/S
4 – 4
No sound from external input devices (5)
No sound from EXT5 (AUDIO) connecting an external input
device.
Check that Option-HDMI Setup-Audio select is set to “Analog”.
<EXT5>
OK
Is HDMI-L audio signal sent from J2701 terminal to pin (14) of
IC2704 (SW)?
IC2704 (SW)?
NO
Check the line between J2701 and IC2704.
(Q2704, Q2705, etc.)
(Q2704, Q2705, etc.)
Is HDMI-R audio signal sent from J2701 terminal to pin (5) of
IC2704 (SW)?
IC2704 (SW)?
YES
Is HDMI-L audio signal sent to pins (10) of IC3002?
Is HDMI-R audio signal sent to pins (9) of IC3002?
Is HDMI-R audio signal sent to pins (9) of IC3002?
NO
Check the line between IC2704 and IC3002.
YES
Refer to “No sound output in all modes”.
Click on the first or last page to see other LC-42AD5E (serv.man4) service manuals if exist.