Read LG 42PB4DTH-UB / CHASIS / PA72A Service Manual online
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1. Check follow
1-2. When it is normal output of the TUNER
.
Is normal the main of D/W MODE?
Is normal the sub of D/W MODE?
Is it 9V #42 of CXA2069(IC101) ?
Is normal #56 output of CXA2069(IC101)?
FIG1
Is it 9V #42 of CXA2069(IC101) ?
Is normal #44 output of CXA2069(IC101)?
FIG1
Is normal
outpu
of FMS6400(IC702) ?
FIG2
Is normal UPD64015 Power(1.5V,3.3V)
Is
noramlly
connected P101 to P1612 ?
Flat cable
Is
noraml
output of
UPD64015
(IC701)?
Digital Output Y(10bit),C(10bit),H/V,FID
FIG1
FIG2
(TV/CATV mode does not display .)
DCR DVR RF MODE
Is normal
outpu
of FMS6400(IC704) ?
FIG2
Is normal UPD64015 Power(1.5V,3.3V)
Is
noraml
output of
UPD64015
(IC701)?
Digital Output Y(10bit),C(10bit),H/V,FID
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