LG RZ-15LA66 - No Raster on AV;TV Signal Troubleshooting

No Raster on AV Signal
(Video, S-Video)
No Raster on TV(RF) signal
Change L1209, L1210,
L1212
Check the signal of
L1209, L1210, L1212
Repeat
[A] Process
Check the output of
TU1000
Check the input/output
of IC1
Check the input/output
of IC800, IC851
Check input source cable and jack
Fail
Fail
Fail
Fail
Re-soldering or
Change the defect part
Chek X11
Fail
Re-soldering or
Change the defect part
Check 5V, 33V of TU1000
Re-soldering or
Change the defect part
Pass
Pass
Pass
Check the input/output
of IC901
Fail
Re-soldering or
Change the defect part
Check X900
Pass
Pass