Read LG 42LN5700 (CHASSIS:LJ33B) Service Manual online
22 / 97
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.( with Main to Power Cable, Speaker Cable and LVDS or EPI Cable)
TUNER checking part
A. Video error_Video error, video lag/stop
<ALL MODELS>
A9
Established
date
Revised
date
Error
symptom
Content
LCD TV
2012. 12 .21
Standard Repair Process Detail Technical Manual
Click on the first or last page to see other 42LN5700 (CHASSIS:LJ33B) service manuals if exist.