No Sound
Symptom
Video is normal but there is no sound.. -
Major
checkpoints
When the speaker connectors are disconnected or damaged. -
When the sound processing part of the Main Board is not functioning. -
Speaker defect. -
Diagnostics
Does the DC B12VS appear at
CN201 PIN 7,9 - B12VS_PW ?
Does the sound data appear at
PIN - COMP2_SR_IN,COMP2_SL_IN ?
Does the sound data appear at
TP - SPK_ L-, SPK_L+, SPK_R-, SPK_R+ ?
Yes
Yes
Yes
Yes
Input the sound source properly.
Please, Contact Tech support.
Change the Main Assy.
Check CN502_NEU.
Change the Main Assy.
Check IC1111 (X5).
Change the Main Assy.
No
No
No
No
No
Check the source and
check the connection of sound cable ?
(HDMI)
Replace speaker ?
7
Caution Make sure to disconnect the power before working on the IP board.
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