Read LG 19LD330 / 19LD340 / 19LD345 (CHASSIS:LP91H) Service Manual online
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TROUBLESHOOTING
No power
(LED indicator off)
Check 24V, 12V, 3.5V
of Power B/D.
Check short of Main B/D
or Change Power B/D.
Pass
Check Output of
IC1001, IC1005, IC1007.
Check P307 Connector
Change LED Assy.
: [A] PROCESS
Fail
Fail
Pass
Pass
Check LED Assy.
Change IC1002, IC1008, Q1003
Pass
Check short of IC1001,
IC1005, IC1007.
Fail
Re-soldering or Change defect
part of IC1001, IC1005, IC1007
Fail
No Raster
[B]: Process
Check LED status
On Display Unit.
Repeat A PROCESS.
Pass
Fail
Check Output of IC802.
Change IC802.
Fail
Change Inverter Connector
or Inverter.
Fail
Pass
Fail
Pass
Change LVDS cable.
Fail
Check LVDS Cable.
Pass
Check Panel Link Cable
or Module.
Change Panel Link Cable
or Module.
Check Inverter Connector
or Inverter.
Pass
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