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LG 55LW6500 - Main board from LG 55LW5700?    
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Joined: 24 Dec 2017
Posts: 5
Location: Australia

PostPosted: Tue Dec 26, 2017 3:14 am    Post subject: LG 55LW6500 - Main board from LG 55LW5700? Reply with quote

I have a LG 55LW6500 LCD LED TV with a non working M/B. I tested the main board and it is not generating enough voltage according to schematic at many points. there is absolutely no voltage at LVDS connector pins. So I think main board is faulty. I have tested SMPS and it is generating correct voltages at all points. I tested the back lights by jumping DRV-ON to a 3.5 volt pin on SMPS and they are working. I did the flashlight test and I am getting nothing on the screen. Now, LG is not making new M/Bs for this model but I got hands on a LG 55LW5700 M/B which at least visually looks exactly same copy. Can I use it in my TV?

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