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37LV370S-ZB, 37LV375G-ZC, 37LV375S-ZC, 37LV375W-ZC (CHASSIS:LD12B) - LG TV Service Manual (repair manual). Page 54

Read LG 37LV370S-ZB / 37LV375G-ZC / 37LV375S-ZC / 37LV375W-ZC (CHASSIS:LD12B) Service Manual online

24V is provided from the Power Board and supplied to LED 
Driver PCB. Check the PIN contact condition and connection.
Check each voltage output (5V,12V,24V) in the Power Board.
Established 
date 
Electronics 6-3
Standard Repair Process Detail Technical Manual
Revised 
date 
2008. 2 . 1
LCD TV
Error 
symptom
Check LED Driver PCB supply voltage
Content
A. Video error_No video/Normal audio 
3/33 - 1/13
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