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10
Audio Trouble
10
Audio Trouble
Check if U12 -pin48,49,50,57
or RP12 is false welding
N
Check if CN18 and U12 are false
welding, then check the power supply
of U12
Y
Repair welding and Check the power
Change U12
supply circuit of U12 or U13(3.3V)
HDMI has no sound
HDMI has no sound
Check if U14 pin-1,2,3,,4 have input signal
N
Y
Repair welding
N
）
）
Check the power supply circuit
of U14／CS4344
Y
Check the power supply for
U14/CS4344
N
Y
Check the
peripheral circuit of U14
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