Samsung UE40D5520rkxxu lines on screen

**Bloopeta** · 11-21-2019, 04:20 PM

Just a quick one, what would cause the lines on screen on this in the pics? T-con? Connection/cable? Or is the LCD panel shot??

Apologies for the poor pics, its all thats available

**Bloopeta** · 11-22-2019, 08:49 AM

Ok, so actually now have the TV in my possession, so have more info, the pics above were how it was, I have since unplugged Tcon, cleaned connections, plugged back in, and now its worse lol.

Here are the pics as it is now, including pics of it opened up

**Bloopeta** · 11-22-2019, 09:12 AM

Turned off, disconnected tcon again, reconnected and turned back on n now looks like this

**Bloopeta** · 11-22-2019, 09:47 AM

Constantly changes all the time, very hard to picture

**nomoresonys** · 11-22-2019, 09:58 AM

Need to start somewhere, maybe test the tcon, I see lots of test points.

**Bloopeta** · 11-22-2019, 10:04 AM

Quote:

Originally Posted by nomoresonys

Need to start somewhere, maybe test the tcon, I see lots of test points.

Where would I saart with that please?

**nomoresonys** · 11-22-2019, 10:24 AM

Maybe try this first: https://www.youtube.com/watch?v=GcBwTums_mI

**vinceroger69** · 11-22-2019, 10:32 AM

Do these suffer from tab bond issues ?

**nomoresonys** · 11-22-2019, 10:48 AM

Quote:

Originally Posted by Bloopeta

Where would I saart with that please?

HVIN_12V
VCC_3.3V
VCC_1.8V
VCC_1.2V
VCC_1.1V some there, I don't usually test tcons much so not sure if these voltages are standard from tv to tv or not, you could test those gamma points? but it really doesn't look like a gamma issue to me.

**Bloopeta** · 11-22-2019, 11:18 AM

Quote:

Originally Posted by nomoresonys

Maybe try this first: https://www.youtube.com/watch?v=GcBwTums_mI

Just watched the video, disconnected 1 side at a time, heres the pics.

Also tried wiggling and tapping the bonded tabs, that did nothing.

**budm** · 11-22-2019, 11:23 AM

https://www.badcaps.net/forum/attach...7&d=1574437580
It looks like main board issue.
Did you try heating/cooling the maim board yet?

**Bloopeta** · 11-22-2019, 11:33 AM

Quote:

Originally Posted by budm

https://www.badcaps.net/forum/attach...7&d=1574437580
It looks like main board issue.
Did you try heating/cooling the maim board yet?

No not yet, been focusing on Tcon, I will try that now

**nomoresonys** · 11-22-2019, 11:53 AM

I don't know if it's dangerous, as in might short something BUT I've seen some get a better or clear picture by adjusting one of the ribbon cables while in the diagnostic mode you are in on the picture, with tv running.

**Bloopeta** · 11-22-2019, 12:24 PM

Tried heating then cooling board, also tried playing with ribbon cables whilst switched on picture test screen.

Pic 1 is how the screen looks with nainboard unplugged, pic 2 is how it now looks all connected after trying the above mentioned things

**nomoresonys** · 11-22-2019, 12:33 PM

So it seems to be changing somewhat, that makes me think it's the tcon.

**Bloopeta** · 11-22-2019, 12:36 PM

Quote:

Originally Posted by nomoresonys

So it seems to be changing somewhat, that makes me think it's the tcon.

It changes everytime I do something, rarely the same twice

**nomoresonys** · 11-22-2019, 01:17 PM

Wonder if that's a match, there's a make offer option also, might want to test your tcon more: https://www.ebay.co.uk/itm/Samsung-4...YAAOSwcrdcv1Gw

**Bloopeta** · 11-23-2019, 06:02 AM

Quote:

Originally Posted by nomoresonys

Wonder if that's a match, there's a make offer option also, might want to test your tcon more: https://www.ebay.co.uk/itm/Samsung-4...YAAOSwcrdcv1Gw

Theres quite a few for sale locally, but since moving the ribbons with it switched on, the picture is terrible and no longer changes, so think Tcon is goosed now, and possibly main board, so not prepared to put any money into it.

**nomoresonys** · 11-23-2019, 07:21 AM

Yep 6-7 years old only 40 inch. not much meat on bone for resale and hard to tell just what's wrong with it.

**Bloopeta** · 11-23-2019, 08:12 AM

Quote:

Originally Posted by nomoresonys

Yep 6-7 years old only 40 inch. not much meat on bone for resale and hard to tell just what's wrong with it.

Precisely, better using for spares

11-22-2019, 09:58 AM	#5
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen Need to start somewhere, maybe test the tcon, I see lots of test points.

11-22-2019, 10:24 AM	#7
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen Maybe try this first: https://www.youtube.com/watch?v=GcBwTums_mI

11-22-2019, 10:32 AM	#8
vinceroger69 Badcaps Veteran Join Date: Mar 2012 City & State: Nuneaton Warwickshire My Country: uk I'm a: Hobbyist Tech Posts: 5,858	Re: Samsung UE40D5520rkxxu lines on screen Do these suffer from tab bond issues ? Last edited by vinceroger69; 11-22-2019 at 10:55 AM..

11-22-2019, 11:23 AM	#11
budm Badcaps Veteran Join Date: Feb 2010 City & State: S.F. Bay area My Country: USA Line Voltage: 120V 60Hz I'm a: Knowledge Seeker Posts: 36,657	Re: Samsung UE40D5520rkxxu lines on screen https://www.badcaps.net/forum/attach...7&d=1574437580 It looks like main board issue. Did you try heating/cooling the maim board yet? __________________ Never stop learning Basic LCD TV and Monitor troubleshooting guides. http://www.badcaps.net/forum/showthr...956#post305956 Voltage Regulator (LDO) testing: http://www.badcaps.net/forum/showthr...999#post300999 Inverter testing using old CFL: http://www.badcaps.net/forum/showthr...er+testing+cfl Tear down pictures : Hit the ">" Show Albums and stories" on the left side http://s807.photobucket.com/user/budm/library/ TV Factory reset codes listing: http://www.badcaps.net/forum/showthread.php?t=24809 Last edited by budm; 11-22-2019 at 11:26 AM..

11-22-2019, 11:53 AM	#13
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen I don't know if it's dangerous, as in might short something BUT I've seen some get a better or clear picture by adjusting one of the ribbon cables while in the diagnostic mode you are in on the picture, with tv running.

11-22-2019, 12:33 PM	#15
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen So it seems to be changing somewhat, that makes me think it's the tcon.

11-22-2019, 01:17 PM	#17
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen Wonder if that's a match, there's a make offer option also, might want to test your tcon more: https://www.ebay.co.uk/itm/Samsung-4...YAAOSwcrdcv1Gw

11-23-2019, 07:21 AM	#19
nomoresonys Badcaps Veteran Join Date: Jan 2013 City & State: midwest My Country: U.S. I'm a: Knowledge Seeker Posts: 4,470	Re: Samsung UE40D5520rkxxu lines on screen Yep 6-7 years old only 40 inch. not much meat on bone for resale and hard to tell just what's wrong with it.

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