I got this LG 55LN5400 with a jumping picture (See pictures)
I already replaced the t-con board with one on eBay with no success
I already replaced the t-con board with one on eBay with no success
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Re: LG 55LN5400 Jumping Picture
I also tried to disconnect one side of the t-con but It won't work (Should give half of the screen) at all (blank picture) if I disconnect any of the sides -
Re: LG 55LN5400 Jumping Picture
Prob the panel itself. Whenever Ive seen that double-image/lined sort of picture--the panel itself or the COF chips that are part of the panel has been duff.TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: LG 55LN5400 Jumping Picture
Is it normal if I leave the tv working for a while, the image get better and better?
its not jumping anymore, but the image is still not good :pAttached FilesLast edited by rikrikrik13; 02-06-2016, 04:42 PM.Comment
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Re: LG 55LN5400 Jumping Picture
I wonder if these sets suffer from bad tab bonds? also i wonder if maybe the main board could cause this you have nothing too loose try heating the main board up with a hair dryer see if the picture gets better as maybe bad bga soldering etc.Comment
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Re: LG 55LN5400 Jumping Picture
That isn't a tab bond or tcon issue. You sure can press on the BGA, heat or cool things on the main board see what happens... but the chances are slim.Comment
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Re: LG 55LN5400 Jumping Picture
30 minutes TV is running and now the picture is almost perfect ??Attached FilesComment
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Re: LG 55LN5400 Jumping Picture
I just did a software update, no change.
Image still good after 45 minutes (you can still see some horizontale line everywhere but you really need to look)
Screen seems to keep ghost image, after the update, the '' UPDATE '' message stayed on the screen for several minutes (ghost image)
I think the panel is bad lolComment
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Hi,
I have a VIZIO E70-E3.
Symptoms: Black screen, no picture, but LED backlights are working.
I probed the power board and voltages are as listed on the board.
Main board appears fine, too.
I believe the problem is either a bad T-CON board, or connection to LCD, or bad LCD.
There are two separate ribbon cables feeding the LCD.
If both are connected, the screen is black.
If only the ribbon cable that feeds the right side of the screen (when viewed from the front) is disconnected, the left side of the screen shows picture and... -
Hi,
i want to repair a Sony KD-75XF9005 TV that initially only showed a grey picture.
Backlight seems to work, Sound (Setup menu after reset) works.
If i dissconnect the left FFC cable from TCON to panel i have half a screen on the right. If left cable is connected always only the grey screen.
Interchanged the cables, its always only the right side that is working. Always grey if left side is connected.
With my small knowledge i would think at least the cables are good.
Can this happen because of a bad tcon board?
Or is it always a bad/shorted... -
Hello all ~
Hope this finds you well. This LG 82UN8570AUD (April 2021 model) 4K UHD television has full audio capabilities but video is compromised / problematic.
When I picked up this large LG tv it had a full black screen upon startup. Previous owner said it just went black one day. No popping sound or anything else of note.
I got the display to work by taping off several traces of the right-hand side ribbon cable on the TCON that leads from TCON to PANEL. However, despite dozens and dozens of attempts to find the right combination / range of traces taped... -
hi
i have a samsung lcd tv
it powers on with sound and backlight but no picture
all voltages from PS are good 12v 3.3v and 5v
whats odd is that at the tcon i tested voltage across the fuse on the tcon and i get 0v
i figured main board issue..so i ordered a used main board....when i put replacement main board in i still have same issue
no 12v at the tcon fuse
i disconnect the panel ribbon cables to rule out any panel issues and i still have no 12v at the tcon fuse
the odds of having 2... -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side...
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