My Backlights work fine, but screen is black.

Question

LG Television

Repair guides and support for your LG TV.

1339 个问题查看全部

Nathan Hammond @nham919

声誉积分: 21

2

1

发帖于: 2019年4月3日

更多选项

My Backlights work fine, but screen is black.

I was working on a 55lf6000-UD television, i had just replaced the LED strips(Flashing issue) but when I got it back together, the screen had lines and was going all white. (As far as I’m aware, I didn’t crack the screen) I was bending over the tv, with a hoodie on, and , (drumroll please) my metal hoodie sting aglets shorted the power supply. so i ordered a new one.

Now, i have the tv on, was expecting the white screen which i was hoping the OK & EXIT trick would work on, but instead the backlights are on, but the screen is completly off, barely some light bleeds from the corners. Im lost on this, all my ribbon cables are snug. what could my problem be? Main Board fried during the shortage? TCon gone bad?

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 0

2条评论

White Screen is back, i tried the EXIT & OK but no success. I have a twin TV that I will pull the Tcon from to test on the TV in question.

由 Nathan Hammond 完成的 2019年4月3日

Swapped Tcon. Still white screen with some lines. I can also clearly see the 4 quadrants of the screen in slight offsets of white if that helps.

由 Nathan Hammond 完成的 2019年4月3日

添加一条评论

1个答案

已选择的解决方案

oldturkey03 @oldturkey03

声誉积分: 782.3千

1.1千

893

2.3千

发帖于: 2019年4月3日

更多选项

@nham919

if you have no video is is most commonly the main board. After all, all video processing is being done on that board.

这个答案有帮助吗？

是否

得分 2

3条评论:

I swapped the Tcon board & main board and still White screen.

I think I may have done something to the LCD itself, although there aren't any visible cracks or bleeding, the lines lead me to believe this.

由 Nathan Hammond 完成的 2019年4月3日

I am sorry I did not realize you replaced the main board as well. Yes, the only thing left is your panel. so it could have gotten damaged. Post some pictures of what it looks like with your question. 在已经存在的问题里加入图片

由 oldturkey03 完成的 2019年4月3日

I added the pictures.

由 Nathan Hammond 完成的 2019年4月3日

添加一条评论

White Screen is back, i tried the EXIT & OK but no success. I have a twin TV that I will pull the Tcon from to test on the TV in question. — Nathan Hammond
Swapped Tcon. Still white screen with some lines. I can also clearly see the 4 quadrants of the screen in slight offsets of white if that helps. — Nathan Hammond
I swapped the Tcon board & main board and still White screen.

I think I may have done something to the LCD itself, although there aren't any visible cracks or bleeding, the lines lead me to believe this. — Nathan Hammond
I am sorry I did not realize you replaced the main board as well. Yes, the only thing left is your panel. so it could have gotten damaged. Post some pictures of what it looks like with your question. 在已经存在的问题里加入图片 — oldturkey03

LG Television

My Backlights work fine, but screen is black.

1个答案

添加你的答案