Read LG 60PV250-UB (CHASSIS:PU14K) Service Manual online
Make sure you can’t hear any audio
Check Signal (PWM)
L803, L804
Replace L803, L804.
Y
N
Check IC801 Power
16V(L303), 3.3V(L801,L802)
Check 16V (P301 #1,2),
3.3V (IC303 #2)
Y
N
Check Connector
JK801
Check Mstar I2S Output
R817, R818, R819
Y
Replace IC1.
N
Check speaker for damage.
Y
Check IC801 Status
/PDN(#19), /Reset(#25) is High?
Check /Reset (R829),
/PDN (R812)
:They must be High (3.3V)
N
Replace JK801
N
Replace the Speaker
N
Y
Y
All Source Audio
Trouble Shooting Guide
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