No Sound from an external input device connected to
EXT5 (VGA)
Is PC_IL audio signal sent from X028-2-T to D022-9
(TEA6422)
Is PC_IR audio signal sent from X028-2-R to D022-20
(TEA6422)
no
Check connector (X028-2) and the cable to device
v yes
Is the audio signal sent from D022-12 and D022-13 to
D013?
Check C0150 and C0152
no
Check D022 circuitery (SDA/SCL,…)
v yes
Is audio signal sent from D013 (TDA15134)?
Check R0155 and R0158
no
Check D013 circitery (R0155, R0158…)
v yes
Is audio signal sent from D020 (TDA8932)?
Check D020-27/30 and D020-19/22
no
Check +28V_audio and other D020 circuitery
v yes
Is audio signal on X022 and X021 normal
no
Check connectors
v yes
Check speakers and wiring
LC-32WD1E/S/RU, LC-37WD1E/S/RU, LC-42WD1E/S/RU, and LC-32/37/42WT1E
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