vertical lines on screen

[ryn0909]

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

[jasko_jacker]

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

[ryn0909]

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.

[jasko_jacker]

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 ?

[ryn0909]

Re: vertical lines on screen

yes but it is very small connector, rectangle shaped. i dont have probes that size for my multimeter

[ktmmotocross]

Re: vertical lines on screen

bad from new or just cracked LCD. u cannot repair it

[ryn0909]

Re: vertical lines on screen

well i have another LCD screen and cable on the way. So when i get it, i will replace one of them at a time to pinpoint the problematic component. then i will report back, my findings. thanx for the assistance