LG 47LA790V Service Manual page 105

Standard Repair Process Detail Technical Manual
Error
Established
error_No
2012. 12 .06
A. Video video/Normal audio
symptom
date
LCD TV
Revised
Check LCD back light with naked eye
Content A1
date
<XXLA79XX>
After turning on the power and disassembling the case, check with the naked
eye, whether you can see light from 4 locations.
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