LG RZ-15LA70 Service Manual - Page 19
No Raster on TVRF signal
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No Raster on AV Signal (Video, S-Video) No Raster on TV(RF) signal Repeat [A] Process Pass Check the output of Fail TU1000 Check 5V, 33V of TU1000 Re-soldering or Fail Change the defect part Check the signal of L1209, L1210, L1212 Fail Change L1209, L1210, L1212 Pass Check the input/output of IC1 Pass Re-soldering or Change the defect part Fail Chek X11 Check the input/output of IC800, IC851 Pass Check the input/output of IC901 Pass Re-soldering or Fail Change the defect part Re-soldering or Change the defect part Fail Check X900 Check input source cable and jack
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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