Help me save a Samsung from landfill - Page 1
Forum section: electronics / repair

author: fixy88
author_rank: Contributor
timestamp: November 30, 2018, 09:11:49 am
content: Hi - hoping someone here might be able to help. I've acquired a Samsung UA55ES6200 with a screen fault. From the center to the left hand side the image gets darker with repeated horizontal banding or horizontal patterning in a 5 pixel height repeating pattern. When switching between screen displays there is some odd slow coloured fading on the extreme left. The right hand side appears to be ok. There is a video of the fault here -https://drive.google.com/file/d/1fh4TAOJQQ-ZQgF7UlqHQF22BmVnwhTnW/view?usp=sharingand an image here(everything missing to the right is unaffected)https://drive.google.com/file/d/12d-9TddyRQhuCwHyQde-pJpoUfwxKSzQ/view?usp=sharingImgur link here for anyone uncomfortable with a google drive linkhttps://imgur.com/a/OisMbOWThanks for any ideas. I can solder SMD parts if needed.

author: coromonadalix
author_rank: Super Contributor
timestamp: November 30, 2018, 11:10:41 pm
content: hum is it t-con board related, normally its a pcb between the main pcb and the lcd panel, you may have 1 or 2 flat ribbon connector going to it, and the output is going to the front lcd panel

author: fixy88
author_rank: Contributor
timestamp: December 01, 2018, 12:07:21 am
content: I'm going to try disconnecting the t con output ribbons one at a time and see what the panel does, and maybe try swapping them to see if the fault moves left to right. I suspect the LCD panel might be faulty.

author: tpowell1830
author_rank: Frequent Contributor
timestamp: December 01, 2018, 12:07:57 am
content: Try reseating the flat ribbon cables, specifically on the side with the problem.

author: fixy88
author_rank: Contributor
timestamp: December 01, 2018, 12:21:22 am
content: Quote from: tpowell1830 on December 01, 2018, 12:07:57 amCheers, I have poked them while it's running with no change, but will reseat them as the next step.

author: fixy88
author_rank: Contributor
timestamp: December 01, 2018, 04:58:09 am
content: I tried running it without the t con output ribbons both left and right sides (and reseating). I'm not sure what to make of the results though. On the left hand side with the right disconnected, the image was not refreshed. On the right hand side with the left connected you can see evidence of some of the missing lines - I'm not sure though if t con output is "brick wall" left and right or if there is some blending? A couple of videos in this folderhttps://drive.google.com/open?id=18K6m_msYLsWrWwTtqKc_agfH8LjYq123- apologies for the terrible quality - lighting was against me and I had to hold the TV and camera at the same time! Cheers for any help.

author: coromonadalix
author_rank: Super Contributor
timestamp: December 01, 2018, 01:45:17 pm
content: well it may be the lcd panel with its integrated drivers chip, i think the recycling option will be the best choice ?Maybe sell the psu board and or the main board too for a few $$

author: Rasz
author_rank: Super Contributor
timestamp: December 01, 2018, 04:54:38 pm
content: with any luck flaw might be similar to this:eureka is at 50:00

author: coromonadalix
author_rank: Super Contributor
timestamp: December 01, 2018, 06:03:04 pm
content: had a problem like this on a 32 inch lg full hd put in the trash one month ago, it was similar to a t-con board problem, changed it 20$, but the real problem was the lcd drivers chip embedded in the pcb foil, this kind of foil is very complicated to work with ...

author: fixy88
author_rank: Contributor
timestamp: December 01, 2018, 09:27:58 pm
content: Oh this feels more like where the problem might be. I'll pop the surround off it and see what is under that, but it might be a writeoff by the looks. Thanks for the tips!

author: fixy88
author_rank: Contributor
timestamp: December 01, 2018, 10:21:38 pm
content: Cutting the CKV/STVP line might be worth trying before I turf this onehttps://www.scribd.com/document/355891392/samsung-panel-repair-v1-7

author: vidarr
author_rank: Frequent Contributor
timestamp: December 01, 2018, 10:54:24 pm
content: Why don't you just use it with security cameras, or something like that. Seems to be a waste to just put in a landfill.

author: fixy88
author_rank: Contributor
timestamp: December 02, 2018, 04:58:47 am
content: This doesn't look goodI take it there is no bypass fix for this when it is burnt?

author: tpowell1830
author_rank: Frequent Contributor
timestamp: December 02, 2018, 05:32:41 am
content: Quote from: fixy88 on December 02, 2018, 04:58:47 amThe upside is that you have a clear part number to order a new part, but, the downside is that those are very fiddly to replace.

author: fixy88
author_rank: Contributor
timestamp: December 02, 2018, 05:43:59 am
content: Quote from: tpowell1830 on December 02, 2018, 05:32:41 amHa oh I missed the joke there ;-) I had a proper look - there are quite a few lines heading in and out of that tiny chip

author: Rasz
author_rank: Super Contributor
timestamp: December 02, 2018, 02:38:11 pm
content: Quote from: fixy88 on December 02, 2018, 04:58:47 amyou wont know until you tryQuote from: tpowell1830 on December 02, 2018, 05:32:41 am

author: fixy88
author_rank: Contributor
timestamp: December 02, 2018, 11:37:12 pm
content: So it seems like it is fixed! I removed all the drivers from the bad side and it is working fine. I guess it might not last, but I had no other options to try. Thanks for all the input :-)

author: Rasz
author_rank: Super Contributor
timestamp: December 03, 2018, 01:14:59 am
content: that seems hardcore, did you try just removing the fried one first, or did you just go for it?afaik this will put more load on the remaining ones, should make one side of the screen crappier

author: fixy88
author_rank: Contributor
timestamp: December 03, 2018, 01:31:43 am
content: Quote from: Rasz on December 03, 2018, 01:14:59 amWell I had nothing to lose at this stage. Yes I just removed the fried one and once I saw that fixed that block I went for it! Surprisingly the two sides are exactly the same. I'm not the first to try this apparently

author: fixy88
author_rank: Contributor
timestamp: July 01, 2019, 10:28:12 pm
content: Just wanted to update this and report that the TV is still working great after the "repair".

author: shakalnokturn
author_rank: Super Contributor
timestamp: July 02, 2019, 06:50:22 am
content: You've recovered a usable display, is anything worse about the picture compared to when the TV was new?

author: fixy88
author_rank: Contributor
timestamp: July 02, 2019, 11:03:30 am
content: Quote from: shakalnokturn on July 02, 2019, 06:50:22 amI didn't see it when it was new, but it appears to be working 100% as it should be.

author: fixy88
author_rank: Contributor
timestamp: July 30, 2021, 02:04:10 am
content: Update - hack fix still going strong. No change in PQ.