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42LN54XX, 42LN540S, 42LN540V, 42LN541V, 42LN542V (CHASSIS:LD31B, LD36B) - LG TV Service Manual (repair manual). Page 62

Read LG 42LN54XX / 42LN540S / 42LN540V / 42LN541V / 42LN542V (CHASSIS:LD31B / LD36B) Service Manual online

Standard Repair Process Detail Technical Manual 
LCD TV connection diagram (1) 
A. Video error _Vertical/Horizontal bar, residual 
image, light spot 
 
As the part connecting to the external input, check the 
screen condition by signal 
 A7 
Established  
date  
Revised  
date  
Error 
symptom 
Content 
LCD  TV 
<ALL MODELS> 
2013. 01 .09 
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