Re: Black Vertical Bars Through 1/2 of Screen
I have a 50px4dr-UC with the exact same problem (black vertical bar from top... half way down screen... looked like this). If I looked very closely, I can see little colored sparkles in the black bar. I first tried cleaning and reseating the ribbon cables on the board. After I did that, the bar went away but eventually came back a few days later. I then figured it was the board, so I ordered a used Top_Center board. Put it in and the black bar was gone for a couple days, but it did return.
Next, I tried to resolderd the 100 ohm resistors that are on the flex cable. I just added enough heat to melt the solder on each end of the resistor. Did not add any solder to it. Put it all back together and now I had the old original black bar AND a new one a few inches over from it. Next, I actually applied a small amount of solder to each end of each resistor on the flex.
Put it all back together and now the both lines are totally gone. Been working solidly for a few days now... so hopefully this fixed the issue.
If anyone is looking for the Top_Center XR Buffer Board (LG 6870QXC008A)... I got one I would sell cheap. Send me a PM if interested.
I have a 50px4dr-UC with the exact same problem (black vertical bar from top... half way down screen... looked like this). If I looked very closely, I can see little colored sparkles in the black bar. I first tried cleaning and reseating the ribbon cables on the board. After I did that, the bar went away but eventually came back a few days later. I then figured it was the board, so I ordered a used Top_Center board. Put it in and the black bar was gone for a couple days, but it did return.
Next, I tried to resolderd the 100 ohm resistors that are on the flex cable. I just added enough heat to melt the solder on each end of the resistor. Did not add any solder to it. Put it all back together and now I had the old original black bar AND a new one a few inches over from it. Next, I actually applied a small amount of solder to each end of each resistor on the flex.
Put it all back together and now the both lines are totally gone. Been working solidly for a few days now... so hopefully this fixed the issue.
If anyone is looking for the Top_Center XR Buffer Board (LG 6870QXC008A)... I got one I would sell cheap. Send me a PM if interested.
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