Sharp LC-32WD1E/S/RU Service Manual page 59

LC-32WD1E/S/RU, LC-37WD1E/S/RU, LC-42WD1E/S/RU, and LC-32/37/42WT1E
No Sound from an external input device connected to
EXT6/7 (HDMI1/2)
Do you see the HDMI content displayed on the screen
Is audio signal sent from D013 (TDA15134)?
Check R0155 and R0158
Is audio signal sent from D020 (TDA8932)?
Check D020-27/30 and D020-19/22
Is audio signal on X022 and X021 normal
Check speakers and wiring
yes
yes
yes
yes
see no video on EXT6/7
no
Check D013 circitery (R0155, R0158...)
no
Check +28V_audio and other D020 circuitery
no
Check connectors
no
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