Read LG 50PG6500-ZA (CHASSIS:PD82A) Service Manual online
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6. In case of no sound
(1) Symptom
1) LED is Green.
2) Screen display but sound is not output.
2) Screen display but sound is not output.
(2) Check following
All input(mode) is no
sound?
Only HDMI is No
Sound?
Yes
No
Download
the EDID data
Check the signal after
CAX2069 refer to circuit diagram
Yes
Only specific input
(except HDMI,DTV,RF)
is no sound?
Check the signal before
CAX2069 refer to circuit diagram
No
No
YES
Only RF is no sound?
Check
the Tuner IN/OUT
Yes
No
YES
Only AV/component/PC
input is no sound?
Is the output of
CXA2069 normal?
Yes
No
IC1300 operates
normal?
Replace the IC1300
(MSP4450)
No
IC1301 operates
normal?
Replace the IC1301
(NTP-3000A)
No
YES
Replace the VSC B/D
YES
No
Replace the CXA2069
Is the speaker On it
menu?
Set on speaker in menu.
No
Is the speaker Cable
normal?
Check the Speaker
Cable.
No
Yes
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