Read LG 42PQ1100-ZE (CHASSIS:PD92A) Service Manual online
Making
Revision
2009. 2 . 1
PDP TV
Input
Block
All Input Audio Problem
Make sure you can’t hear any audio
Check SCL,SDA
R1008,R1009
Replace R1008,R1009
Check IC1000 Power
17V(C1023), 3.3V(L1002,L1003)
Check 17V (P1100 #1,2),
3.3V (IC1103 #2)
Check Connector
P1000
Check Mstar I2S Output
R143,R134,RR135,R136
Replace IC100.
Check speaker for damage.
Check IC1000 Status
PDN(#19) / Reset(#25) is High?
Check
Reset (R1005) / PDN (R1003)
:They must be High (3.3V)
Replace P1000
Replace the Speaker
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
8/14
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