83
Speaker No Sound (Test signal:
0.5Vrms @1KHz sine waveform)
Audio problem
No Audio issue
Yes
Is the TV volume
set to “Mute”?
Yes
Increase the volume level by
pressing the VOL + button on the
remote control or
- on the TV.
Please make sure the signal cable is
connected and has output. Remove the
headphone.
Note: Speaker will be muted when
headphone is connected.
Check IC19 power
pin6,7,12,13=12Vdc
Yes
Check IC19
audio output
Yes
Yes
Check IC19
output signal
Yes
Check net “MUTE” and “HP” circuit
Check equipment output
No
Check U1
No
IC19 fails
No
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