Picture Ok And Sound Ng (Lx700/Lx70) - Panasonic TC-32LX70/70 Technical Manual

Picture OK and
Picture OK and
Is there
Yes
sound from any of the
input sources?
No
No
Is there sound
from the
headphone?
Yes
A Board
Sound NG
Sound NG
No sound
from any of the AV
terminals.
No sound
from any of the AV Terminals
from analog TV
No sound
from Digital TV?
DT Board
No Sound
from HDMI Input
A Board
Is there 15V
on connector AP3
of the AP board. Refer to
Slide 43 for test point
locations
Yes
A Board or Speaker
(LX700/LX70)
(LX700/LX70)
A Board
Is sound
OK?
Yes
DT Board
Is sound
from any of the AV Terminals
OK?
Yes
A
HDMI1
HDMI2
DT
TU8300
IC830
TUNER
2
FRON
T
No
END
AV1
AV2
AP Board
COMPONEN
T
MONITOR OUT
G AV3
G
HEADPHONE
51
No
A Board
No
A Board
IC451
0 IC2106
HDMI I/F
Audio DSP
IC3101
L/R
L/R
AUDIO
L/R
SWITCH
IC8001
Peaks Lite2
L/R
AUDIO
L/R
PROCESS
L/R DTV
HP AMP
Analog
IC2301
Digital
AUDIO
AMP
IC2302
AUDIO
AMP
IC1100
STB
MCU
LX700 Only