No audio output during UHF/VHF reception
Is the set unmuted?
no
press the "mute" on the remote
v
yes
Is the volume set to "50"
no
press the "volume up" on the remote
until volume is "50"
v
yes
Are headphones disconnected from the set?
no
remove the headphones plug from the set
v
yes
Is the antenna properly connected?
no
Connect according to manual
v
yes
Is audio signal sent from D013 (TDA15134)?
Check R0155 and R0158
no
Is the audio signal (SIF) sent to D013
Check Z010-4 and Z010-5
yes
Check +8V_TV(C019) and +5V_TV(C01113)
and periferal circuit
v
no
Is the audio signal (SIF) sent from the Tuner U011?
Check U011-8
yes
Check circuitery of SAW filters (Z010 and
Z011)
v
no
Check 5V_tuner, AGC and I2C signals
Fixed?
v
no
Replace tuner
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
6-21
