4-1-7. 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.
www.freeservicemanuals.info
Published in Heiloo, Holland.
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