LG OM5541 Service Manual page 34

ELECTRICAL TROUBLESHOOTIHG GUIDE
A
YES
Check
IC601(TAS5548)
input data
Pin24
PWM wave.
YES
Check PWM
modulator output
FL: Pin48(-), 49(+)
FR: Pin46(-), 47(+).
Other output
check.
YES
OK
NO
Check
IC601 DATA
input.
YES
OK
NO
Check IC601.
YES
OK
3-19
NO
Check each line resistor output.
NO
Replace IC601.