LCD TV SERVICE MANUAL - Jordans Manuals
LCD TV SERVICE MANUAL - Jordans Manuals
LCD TV SERVICE MANUAL - Jordans Manuals
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Standard Repair Process<br />
<strong>LCD</strong> <strong>TV</strong><br />
Error<br />
symptom<br />
B. Power error<br />
No power<br />
Established<br />
date<br />
Revised date<br />
2008. 3 .26<br />
Electronics 6-3<br />
6/13<br />
Check<br />
Power LED<br />
. Stand-By: Red<br />
. Operating: Blue<br />
Power LED<br />
On?<br />
N<br />
Y<br />
Check Power cord<br />
was inserted properly<br />
DC Power on<br />
by pressing Power Key<br />
On Remote control<br />
Normal N<br />
operation?<br />
Y<br />
Check Power<br />
On ‘”High”<br />
Y<br />
OK?<br />
N<br />
Replace Main B/D<br />
Replace<br />
Power<br />
B/D<br />
※<br />
Check & Repair<br />
Mechanical Power switch<br />
on Local control of <strong>TV</strong><br />
Measure voltage of each output of Power B/D<br />
Normal?<br />
N<br />
Check ST-BY 5V<br />
Y<br />
Normal<br />
voltage? Y<br />
Normal<br />
voltage?<br />
N<br />
Y<br />
Replace Main B/D<br />
Y<br />
Close<br />
N<br />
Replace Power<br />
B/D<br />
Replace Power B/D<br />
※ ’09 years new model apply mechanical power switch<br />
to reduce power consumption in stand-by status.<br />
If mechanical power switch off<br />
→ Doesn’t turn on by remote control<br />
→ Doesn’t appear LED light<br />
Please refer to the A21 Page<br />
Copyright c 2009 LG Electronics. Inc. All right reserved.<br />
Only for training and service purposes<br />
LGE Internal Use Only
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