Read LG 37LC2DB (CHASSIS:LD61A) Service Manual online
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No Audio
Push the POWER
ON key
Replace the MSP
Power Error
Check the interfacing ciruit of
Analog Tuner, component
and PC audio accordingly
w.r.t the mode.
Check the
Condition of all
Connectors, wafers,
I2C In corresponding
Signal flow?
Check the
supply voltage 8V
across L403
Check audio
output at MSP across
R429-431.
Check the
PWM output of NSP
across R436-439
Check
3.3V supply across
L402 and 1.8V at
C448
Check 18V
supply at L421
Check the
Amplifier output level
At L423-426
Is the
Set ON?
Check the
RF SIF, Component
L/R and PC L/R signal across
R212, R171-170, R505-506,
respectively according to The
corresponding mode
On jack board
YES
Turn OFF the Mute
Is the
Mute ON?
Increase the Volume
Is Volume level
Of the set 0?
Correct them
Replace NSP
Power Error
Replace
TAS5122(amp)
There may be some
error in Audio
source.
TROUBLESHOOTING RF/Component/PC
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