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Horizontal Lines & Ghosting on Samsung LN-T4661F

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Old 10-31-2012, 12:35 AM   #31
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My lnt5271fx/xaa has a ghosting issue that has not gone away since it has cooled down outside. Also a portion of the screen is slightly dark. It used to fix itself but no longer anymore. Will this foam fix apply to my tv model as well?
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Old 11-30-2012, 05:58 AM   #32
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I followed the instructions and now I have anearly white screen. I can see the faint screen image. I orginally had the black lines and now they are gone but have white screen. I used to the foam strips and followed the detailed instructions. Has anyone else got the white screen after going through the instructions if so were you able to fix it?
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Old 12-04-2012, 04:41 PM   #33
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Default Samsung Corporate Office Info

I'm having the same issues that you mention with a LN46B650 model and have gotten absolutely nowhere with these idiots. I did uncover the President and not sure of her title (maybe chief complainer officer). At least vent your frustration and tell them how you feel. My last email included the President Kim again essentially saying Goodbye Samsung.

President email: YKKim(at sign)sea(period)samsung(dot com)
Kristyn G: KristynG(at sign)sea(period)samsung(dot com)


Good Luck and if you run across any Class Action Suits, pass it on to me.
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Old 12-13-2012, 01:41 AM   #34
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can somebody please upload it on youtube? I'm not that good in electronics..pleaase..
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Old 12-31-2012, 03:25 PM   #35
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Default Fix worked!

Quote:
Originally Posted by unspun01 View Post
Yes, definitely an LCD screen manufacturing defect. The screen on my 2 year old 52" Samsung LCD TV started having image problems on ALL inputs... When turned on, the video was segmented (3 faint horizontal lines) with a much darker area near the center of the screen. Most times the display would show one of the following: serious ghosting, clouding/hasing, poor refresh, image retention, or double-image in vertical direction (vertical and stretched vertical) on the left hand side.

As noted above by "standup4uright", if the TV is still assembled, squeezing the bezel front-to-back at the top of the LCD can fix or show the problem although if the TV is disassembled you can squeeze the metal bezel top-to-bottom instead.

With the back off the TV, to locate the fault I GENTLY pushed a plastic credit card (read: INSULATING) into the slit between the metal frames at the top of the LCD. It corrected or distorted the image each time (specifically top right, viewed from rear). This had the same effect as squeezing the bezel at the top of the LCD, but a little more specific by applying pressure to the hidden wafer circuit boards.

This is how I fixed my problem:

As viewed from the rear: Tcon = top center, power supply = bottom center, IR button panel = lower left, AV signal board = lower right.

You can do these in whatever order you prefer, but this is generally how to do it:

1) Remove base.
2) Remove back of TV.
3) Remove bottom speakers.
4) Remove metallic shielding "tape" at top of the t-con shield (DO NOT REMOVE T-CONN BOARD).
5) Detach connector at bottom left for the capacitive touch button panel.
6) Remove IR circuit board and long cable to AV signal board (you can re-attach later to turn on or test the tv).
7) Remove plastic decorative bezel from front of TV (several silver screws).
8) Lay the TV on it's back (the 4 wall mounting stand-offs were perfect to keep the TV flat on my large table...).
9) Completely disassemble the TV screen by removing the front metal LCD frame (just a bunch of phillips screws).

This exposes the wafer thin printed circuit boards at the top of the screen to which 16 individual LCD screen traces are bonded...

One or more of these lcd ribbon-cable-to-circuit-board connections has become detached (most likely the top left viewed from front)...Since these cannot be soldered by conventional means, we can "repair" the TV by applying constant pressure to keep the connection "bonded". Since there is about 3/8" space between the metal bezel and the printed circuit boards, I cut foam pieces to apply the pressure. The foam should retain their flexibility even with the relatively high heat from the screen backlight...

10) Cut 16 FOAM pieces (approx 1/2" x 1/2" x 2") from weatherstripping FOAM (or water pipe insulating FOAM if you have).
11) Cut 16 double-sided tape (1/2" x 2") and affix to one side of each foam piece.
12) Place each of the 16 sticky foam pieces on top of the printed circuit boards where the LCD traces are bonded together.
13) Re-assemble the metal frame to the LCD (from the top first, to squish the foam pieces and then apply downward pressure to fit at the bottom).
14) Replace all the screws for the metal frame.
15) Re-attach the IR button panel cable, plastic decorative bezel, speakers, and anything else you removed.
16) Test TV.

Remember, the foam pieces apply downward pressure to the LCD_ribbon_cable/LCD_circuit_board "bonded" junctions. Without it, any of the bonded connections can fail since they are ALL subjected to their own mechanical stresses right from day one at the factory (they are installed with a slight curve that puts a slight force on the bond)

In truth, you don't need to install all 16 foam pieces... On my TV, only the one leftmost bonded connection was intermittent (viewed from the front) but I installed all 16 of them in case more of them fail. Also, you don't even need double-sided tape but it sure does make the job easier if the foamies stay where you put them...

With the right tools and patience, this job can be accomplished in less than 2 hours practically for free.

My TV seems to be working properly for now... Sure beats having a broken TV, or spending lots of money on repairs or a new TV.

Good luck with your repairs. Post back with your success stories...
Thanks to unspun01. The fix worked! I did end up with two very thin vertical lines on the right side of the screen. One green and one red. Not terrible noticeable and certainly better than it was.

Thanks again.
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Old 01-19-2013, 11:36 AM   #36
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could you guys actually see where the flex circuit had become de-bonded. I can't see anything. thanks
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Old 02-08-2013, 04:22 PM   #37
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Quote:
Originally Posted by madeup View Post
Thank you all very much, I was about to throw my 40" Samsung away when I found your detailed fix, I followed your simple clear instructions and the TV is a good as new!
Thank you all for the great fix! The screen on my 46" Samsung LCD TV (purchased in April 2008) recently started having the lines/double image issues and I was able to correct the problem yesterday by following the directions on this forum. I had a few screws left over, but, hey who cares...the problem is fixed and my wife is happy!!!
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Old 02-16-2013, 11:24 PM   #38
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Default This fix is legit...!

Quote:
Originally Posted by unspun01 View Post
Yes, definitely an LCD screen manufacturing defect. The screen on my 2 year old 52" Samsung LCD TV started having image problems on ALL inputs... When turned on, the video was segmented (3 faint horizontal lines) with a much darker area near the center of the screen. Most times the display would show one of the following: serious ghosting, clouding/hasing, poor refresh, image retention, or double-image in vertical direction (vertical and stretched vertical) on the left hand side.

As noted above by "standup4uright", if the TV is still assembled, squeezing the bezel front-to-back at the top of the LCD can fix or show the problem although if the TV is disassembled you can squeeze the metal bezel top-to-bottom instead.

With the back off the TV, to locate the fault I GENTLY pushed a plastic credit card (read: INSULATING) into the slit between the metal frames at the top of the LCD. It corrected or distorted the image each time (specifically top right, viewed from rear). This had the same effect as squeezing the bezel at the top of the LCD, but a little more specific by applying pressure to the hidden wafer circuit boards.

This is how I fixed my problem:

As viewed from the rear: Tcon = top center, power supply = bottom center, IR button panel = lower left, AV signal board = lower right.

You can do these in whatever order you prefer, but this is generally how to do it:

1) Remove base.
2) Remove back of TV.
3) Remove bottom speakers.
4) Remove metallic shielding "tape" at top of the t-con shield (DO NOT REMOVE T-CONN BOARD).
5) Detach connector at bottom left for the capacitive touch button panel.
6) Remove IR circuit board and long cable to AV signal board (you can re-attach later to turn on or test the tv).
7) Remove plastic decorative bezel from front of TV (several silver screws).
8) Lay the TV on it's back (the 4 wall mounting stand-offs were perfect to keep the TV flat on my large table...).
9) Completely disassemble the TV screen by removing the front metal LCD frame (just a bunch of phillips screws).

This exposes the wafer thin printed circuit boards at the top of the screen to which 16 individual LCD screen traces are bonded...

One or more of these lcd ribbon-cable-to-circuit-board connections has become detached (most likely the top left viewed from front)...Since these cannot be soldered by conventional means, we can "repair" the TV by applying constant pressure to keep the connection "bonded". Since there is about 3/8" space between the metal bezel and the printed circuit boards, I cut foam pieces to apply the pressure. The foam should retain their flexibility even with the relatively high heat from the screen backlight...

10) Cut 16 FOAM pieces (approx 1/2" x 1/2" x 2") from weatherstripping FOAM (or water pipe insulating FOAM if you have).
11) Cut 16 double-sided tape (1/2" x 2") and affix to one side of each foam piece.
12) Place each of the 16 sticky foam pieces on top of the printed circuit boards where the LCD traces are bonded together.
13) Re-assemble the metal frame to the LCD (from the top first, to squish the foam pieces and then apply downward pressure to fit at the bottom).
14) Replace all the screws for the metal frame.
15) Re-attach the IR button panel cable, plastic decorative bezel, speakers, and anything else you removed.
16) Test TV.

Remember, the foam pieces apply downward pressure to the LCD_ribbon_cable/LCD_circuit_board "bonded" junctions. Without it, any of the bonded connections can fail since they are ALL subjected to their own mechanical stresses right from day one at the factory (they are installed with a slight curve that puts a slight force on the bond)

In truth, you don't need to install all 16 foam pieces... On my TV, only the one leftmost bonded connection was intermittent (viewed from the front) but I installed all 16 of them in case more of them fail. Also, you don't even need double-sided tape but it sure does make the job easier if the foamies stay where you put them...

With the right tools and patience, this job can be accomplished in less than 2 hours practically for free.

My TV seems to be working properly for now... Sure beats having a broken TV, or spending lots of money on repairs or a new TV.

Good luck with your repairs. Post back with your success stories...
The fix is legit...! Thank you so much! By the way I didn't take the IR Circuit Board out, only the cables described in the fix. With the help of my 12 year old son we got this done and the TV works like new. I did used weather strip from Wally World the Duck brand. Took us 2 hours or less and worked like a charm. Thanks again!!!
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Old 02-17-2013, 09:06 PM   #39
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Default Thanks for the fix info

I have 5 year old LNT5271 with the same problems. Took TV apart as per instructions. Bought 1/2" thick self adhesive weather stripping at Home Depot. Put everthing back together and works like a charm. To bad samsung uses cheaper parts. Once this TV finally goes will look to buy something other than Samsung Brand. Samsung lost my trust.....

April 20/13 UPDATE:Did fix 2 months ago. Ghosting & horizontal came back worst than ever. Finally decided to upgrade TV. Went and bought Panasonic TC-P65GT50 Plasma TV. What can I say. Wow what and impressive TV. Goodbye Samsung Hello Panasonic. Such and amazing TV. If anyone looking to buy new TV I would HIGHLY recommend Panasonic......

Last edited by donproline; 04-20-2013 at 07:45 PM.
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Old 02-23-2013, 10:06 PM   #40
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Default horizontal line ang hosting in samsung lcd tv

I also have similar ghosting and horizontal line problem in my 2 year old samsung LA32C450 LCD TV. When I found that if I apply heat to one of the horizontal lines on the screen side, color distortion goes off though lines remain. Then I think it has something related to temperature and I also followed these steps. But I found only 2 TAB bonding in my screen and that too on downside for which I was not able to check this with TV POWER ON. Though applied foam, my lines did not go. Does anyone have similar model and resolution to this problem?? Please reply for a solution with steps and images if you have for this model.

Thanks
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Old 03-23-2013, 07:54 PM   #41
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Default This repair worked for me as well

Similar screen problems. Ghosting and lines until the set warms up. Started about a year ago. Initially, 'warm up' was five minutes. Lately, 'warm up' is several hours.

At the top of the screen on my Samsung LN52A750R1FXZA is a long thin pc board that basically rests/floats and is held in place by the ribbon connectors that hook the screen to the driver hardware. Sixteen flat ribbons come off this board make a 90 degree turn down in the front of the set, behind the metal frame, and hook to the LCD panel. The ribbons can be slightly loose on either end of the ribbons.
Where they connect to the board or where they connect to the panel. The ribbons are only an inch or so long. Pressing down can help for one end of the ribbons. Pressing in, toward the back of the TV, from the front helps the other end of the ribbon.

Took the set down following unspun01's instructions. At first I inserted spacers to press down but that didn't fix the problem. For those spacer I found felt pads at Lowe's in the hardware department. They are the felt pads that go under chairs. I found one that was about two inches long and half inch wide. Luckily 16 came in the package. Unfortunately, as stated, that didn't fix the ghosting.

Took the frame off again. Back to Lowe's in the insulation department they sell the weatherstrip that you put around doors. I got the thinnest, 3/16 inch thick, and stuck it to the metal frame. Screwed the frame to the LCD panel and powered up. Works like a champ. Like new. Wife is ecstatic. She really didn't want to spend another $2K.

Ten bucks at Lowe's saved me a new TV, $2K plus. For me, and others, the problem isn't the screen, it's the connectors on the ribbon cable. Just go slow and take care when moving the screen. Don't twist the screen after you remove the metal frame around the screen as the screen can easily come out of the TV or break.
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Old 04-21-2013, 08:47 PM   #42
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Thanks to unspun01 for a fix on my Samsung LN52A750R1F - his great instructions are easy to follow and it works!!! - thanks for the help!!
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Old 05-04-2013, 07:52 PM   #43
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Default Worked for me

TV: Samsung LN52A650

Problem: left side ghosting, bad color. Would go away after a few minute warm up. Warm up time got longer till it would resolve and resurface.

I followed the directions for the fix and my TV is looking much better at the moment.

Thanks for the help!
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Old 05-07-2013, 09:01 AM   #44
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40" Samsung Model LN40A630M1FXZA with intermittent ghosting when 1st turned on.

Thanks unspun01 View Postfor the help. I installed the foam strips and it has been working great ever since.

Last edited by ButaneBlue; 05-07-2013 at 09:05 AM. Reason: Add name
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Old 05-10-2013, 07:58 PM   #45
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Talking 3 lines across tv and ghosting

This was happening to me. My tv is a sony bravia but what my husband did by accident was to go to the format on the control and switch from 1080 to 480 then 720 and back to the 1080. He did this about 2 or 3 times through the cycle and then left it alone. All of a sudden the picture came in perfect. I dont know if it is a problem with the aspect ratio in the tv but now every time we turn it on we go through that cycle and the tv clears up. Yay, we dont have to buy a new tv. Just try it if you are getting these symtoms. it might work on yours also.
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