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47SL90QR-MA, 47SL90QR-TA (CHASSIS:LP91L) - LG TV Service Manual (repair manual). Page 33

Read LG 47SL90QR-MA / 47SL90QR-TA (CHASSIS:LP91L) Service Manual online

No Sound
Check The Input Sourse
Check The Input/Output
Of IC600
Re-soldering or 
Change the defect part
Fail
Pass
Pass
Check The Speaker
Change Speaker 
Fail
Check The Speaker Wire
Pass
Change The Source Input
Fail
SL90 Series
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