LG 20LS7D - Page 16

8. No sound
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Check the input
Source.
Fail
Pass
Change the source input.
Check input/Output
of IC100.
Fail
Pass
Re-soldering of Change the defect part.
Check the X110
Check the input/
output of IC500
Fail
Re-soldering or Change
the defect part.
Pass
Check the Speaker
Pass
Check the Speaker wire.
Fail
Change Speaker.