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9-3. Mainboard Failure Check
Symptom: No Sound
No Sound
(All Mode)
Check the input
Source
Change Source input
Check the
input/output
Re-soldering or change
IC U13
Check the
input/output
Re-soldering or change
IC U55
Check the
input/output
Re-soldering or change
IC U2
Check the
Speaker
Change the Speaker
Check the
Sperker wire
Fail
Pass
Fail
Fail
Fail
Fail
Pass
Pass
Pass
Pass
Service Manual
Model No.: LEA46T3
51