Hi, i have a samsung sm-t217s galaxy tablet. after having replaced the digitizer, lcd screen and the ribbon cable (that attaches the mainboard to the lcd screen) i now have vertical lines on the display after power up. the tablet is fully functional but the screen flickers a bit with vertical lines on the screen. attached are 2 pics of the display. any help is greatly appreciated. thank you
vertical lines on screen
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Re: vertical lines on screen
Check with a lens the lcd flat cable , sometimes not fit well.
Another frequently issue is a very small crack on the lcd border -
Re: vertical lines on screen
ok i have checked the flat cable several times. i have re-seated the cable each time and it seems to be seated properly. there appears to be no damage to it. the lcd screen has no cracks on it. so the issue is something to do with the lcd screen or the ribbon cable?? its possible that the lcd is defective from person i bought the screen from.Comment
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Re: vertical lines on screen
This type of lcd is very sensitive to shock when it's out of its cover but if you do not have another lcd cable the doubt remains , if you have so much patience you can test it with a multimeter. There is a cable connector on lcd side ?Comment
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by Stanley1843Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesnβt display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed...
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Channel: Troubleshooting Computer Displays
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by FirentiosiThanks for offering your assistance with this. I'm an electronics enthusiast with moderate level of competence (have a decent lab with two power supplies, microscope, DSO, hot air, good iron, can competently work at a component level on SMDs, design and solder own PCBs etc). I really enjoying fixing things and learning new stuff so took up a free 58" LED TV and have been googling and watching Youtube videos to see if I can fix this! I am happy to go down to individual component replacement/strip replacement etc - it's all in the name of learning.
The issues are as follows: the...2 Photos -
by Ancient1Hi
Asking for a friend.
I'm used to black vertical line in otherwise good image - probable solution is a rubber to push and tighten the COFs bonding.
but here its the opposite !
TV has new T-con = same issue
A missing panel voltage would have global effect
So , what should one do ? how can I find where the fault is ?
Thanks !... -
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by ItalianSatHello Everybody,
I have a 40 inch LCD SAMSUNG LE40A656A1CXXE. Its problem is that there are Vertical Lines on Right Half of The Screen.
Interestingly enough, when I move my mouse (in the case if connected to a PC) or when I am watching the TV, lines also move. At first appearance, I had thought that the problem might arose from loose vertical ribbons (COF), but when I opened up the TV for further investigations, I realized that the problem cannot be solved by touching them.
Moreover, I detached the T-CON board for a new round of investigation. I personally... - Loading...
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