Troubleshooting Guide - LG 32LS3510 Service Manual

No power
(LED indicator off)
Check 24V, 12V, 3.5V
of Power B/D
Pass
Check Output of
IC701, IC702, IC705,
IC704, IC709
Pass
Check LED Assy
Pass
Check P400 Connector
No power
(LED indicator off)
Check output of adapter
(JK700 : 24V)
Pass
Check Output of
IC701, IC702, IC704,
IC705, IC706,IC707,IC708,
IC709,IC800
Pass
Check LED Assy
Pass
Check P400 Connector
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Only for training and service purposes
TROUBLE SHOOTING
: [A] Process (for non-adapter models)
Fail
Check short of Main B/D
or Change Power B/D
Fail
Check short of
IC701, IC702, IC705,
IC704, IC709
Check Output of Q720
Fail
Change LED Assy
: [A-1] Process (for adapter models)
Fail
Check short of Main B/D
or Change adapter
Check short of
Fail
IC701, IC702, IC704,
IC705, IC706,IC707,IC708,
IC709,IC800
Check Output of Q720
Fail
Change LED Assy
- 13 -
Fail
Re-soldering or Change defect part
Pass
Fail
Re-soldering or Change defect part
Pass
LGE Internal Use Only