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55GA7900-UA (CHASSIS:LA37G) - LG TV Service Manual (repair manual). Page 109

Read LG 55GA7900-UA (CHASSIS:LA37G) Service Manual online

GA6400 : 18P
GA7900 : 24P
Standard Repair Process Detail Technical Manual
Checking method when power is ON
B. Power error _No power
A19
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A19
Check “power on” pin is high
2011. 12 .14
<GA64/7900>
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