Re: 47LN5700 Parts for backlight problem
I know that a 47 " Vizio has compatiable LED backlight , have no way to cross reference which model though.
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47LN5700 Parts for backlight problem
I have a LG 47ln5700 checked main board and power board all ok . Checked LED circuitry have several LEDs out and open circuits . Just need to replace all strips and plugin board . Been all over different web sites , just cant seem to find replacement for whole backlight system . Any references would be appreciated. The display is LC470DUE (SF) (R1) if any one spots one of these would they contact me by PM . Thanks
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Re: LG 47LN5400 TV Backlight problem
Ok thanks will check those next.
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Re: LG 47LN5400 TV Backlight problem
Yep spikes to about 130 on 1 and 3 then goes back down to 78 . The second pin goes to about 70 DVC then back down to 21 . Can't send pics yet keeps timing out.Last edited by JBP; 06-09-2015, 04:36 PM.
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Re: LG 47LN5400 TV Backlight problem
From left to right pin voltage is and this is based on 200 DC setting on multimeter 78.5 ,21.6,78.5,0Last edited by JBP; 06-09-2015, 12:51 PM.
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Re: LG 47LN5400 TV Backlight problem
I have a 47ln5700 LG that I am having backlight or board problems with . Ruled out bad caps on power board and output voltage seems to be 24v dc going into main board ok . Symptoms were screen went blank ( black ) turned it on and off would show LG logo then right back off . All LED lights seem to be working correctly when first turned on then right back off. T board seems to be working correctly . Have tried flashlight test , but nothing seems to be showing .Don't know whether to replace power board , which seems to be outputting correct voltage...
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