Question about Samsung LN-S4692D 46 in. LCD HDTV
My problem with TV sound very much like (bouvrem on Sep 09,) The TV is on, however on sound or picture. When I look for source I get slight change on screen (Goes from - I can notice the LCD panel is on as it goes from a "ligthed" black to completely black when I turn the set on and off. I can also notice a momentary difference in brightness when I press the source or menu button. Hooked TV directly to cable from Wall outlet - same issue. Please menu button on front of TV - on change. Thanks for any suggestions TV is 12.5 months old just over manufactures warranty
I had the same problem and I replaced the t-con board. My t.v. is fixed!!!! I just couldn't see spending another 700.00 dollars for a repair shop to fix it. The t-con board is located at the top of the t.v. once you remove the back cover. Be very careful removing the two plugs at the top of the board which was easy once I figured out how the clips worked. there is a black lever like connection which flips up, then grip with your fingers the tab and slide the tape like wires straight out. The bottom plug is very simple. Also to expose the t-con board you will have to remove a heat shield cover. Once removed there is foil looking tape that needs to be peeled back to expose the board. The board is very sensitive to static electricity so if you have a grounding strap that you can strap to your wrist and ground to the frame while performing your repair. Its best to lay the t.v. face down on the kitchen table with a blanket to protect the screen. Good luck!
Posted on Sep 07, 2008
I experienced the same loss of picture on my Samsun LN-S4692D six days ago. Based on the very helpful descriptions of others here of how they solved the problem by installing a new T-Con board, I ordered one from partstore.com on Saturday, but the status on Monday became "backordered". I canceled that order, and bought one here: http://www.samsungparts.com/part_detail.asp?catalog_name=Parts+and+Accessories&product_id=BN81-01286A&search_model=LNS4692D
I was successful in installing the card, and my picture is back! It took me longer than expected, about four hours, because it was hard to remove the shield over the card. You need to remove an electrostatic sheild that covers most of the electronics, not too difficult, but there still is a 1/2 in. bar that prevents access to the shield over the card. To lift it, you need to remove the screws that connects that frame to the one that covers the LCD itself. Don't worry, there is no risk to the LCD. I removed all those screws, but lifted only the bar near the top of the TV where the T-Con board is.
The next step is carefully peeling back the aluminum tape that covers openings in shield over the board so you can remove it. There is also a hard-to-access screw that lies between the plastic case of the TV and the metal chassis at the top of the TV that must be removed before the board over can by removed. I couldn't locate a thin enough Phillips right-angle tool, so I took the easy way out and drilled an access hole through top of the plastic case. It won't show when the TV is in the cabinet, and it is now covered by a piece of black electrical tape.
Billnix description of how to open the connector to the ribbon cables at the top of the card was very useful. I disconnected those easily from the old card, and reconnected to the new one without difficulty. I had some trouble removing the connector that plugs in to the bottom of the card, I broke off the two tabs on the side of the connector while I was gently trying to properly disconnect it, I must not have figured out the right technique! I managed to remove the connector with no further damage using a mini screwdriver. None of the pins were damaged, and I plugged it in to the new card without difficulty.
Here are a few pictures:
Main electrostatic shield that must be removed. Half of the T-con shield is visible at the bottom of the picture (top of the TV)
View of the electrostatic shield from the bottom of the TV. Three small screws, and the two hex-head screws that hold in the blue RS-232 type connector, must be removed before the large electrostatic shield can come out. I also removed two larger screws that hold in the AC power plug and slid it towards the top of picture and dropped it down before removing the large shield.
The shield over the T-con board. Note the 1/2 in. bar covering it, which must be lifted at the top of the TV to allow it and the board to be removed. This is done by unscrewing about 6 large screws that hold that frame, which is used to support all the other electrical components of the TV.
The hard-to-access screw between the plastic case of the TV and the metal chassis that holds the center portion of the shield that covers the T-con board. Lacking a thin-enough right angle Phillips screwdriver, I took the easy way out and drilled a hole big enough for the shaft of a screwdriver throught the plastic case of the TV. It is now covered by black electrical tape, and doesn't show when the TV is my media cabinet.
It's great to have a working TV again for about $200 ($156 for the board plus shipping & taxes)! I hope what I have written helps some else with this problem...
Posted on Sep 25, 2008
Fellow Samsung owners, here are my thoughts on this particularly flat panel design flaw and why Samsung, in my opinion, appears to be side stepping this issue for some. Well, I'm here to hopefully spread the word and I encourage others Samsung owners of these models to help get the word out as well. I say get the word out because from researching into why my $4,400 LCD turned into an expensive speaker, one topic never appears to be mentioned as to why the video eventually fails.
T-Con Board Failures... (aka, Video Processor/LCD Feed circuit board), computer guys may refer to this circuit board as a GPU (Graphics Processing Unit) board.
I'm also quite confident that if you haven't had this problem yet, you will. If you have had this problem and think it can't happen again, you are wrong.
So, what is this big secret topic you ask? One word, HEAT... Samsung installed this heat sensitive Processor Unit directly above an extremely warm Power Supply board. For example, open up a desktop or laptop computer and you will find cooling fans attached to heat sinks on the CPU and GPU, these Processors generate a large amount of heat. Don't remove that heat and the Processor will ALWAYS sustain damage. Samsung was at least nice enough to put a very weak heat sink in my $4,400 so I'm definitely not bitter. Did that sound bitter?
It gets better though folks. What has Samsung quietly done about this issue? Here's a clue. The new LCD sets appear to have been designed with, get this, the T-Con board BELOW the Power Supply... So, if you run out and buy one of the newer models, please refrain from operating the LCD upside down for extended periods in warm environments... Couldn't resist, LOL ;-)
And finally, here are few tips to protect that awesome picture of your Samsung in the future. Make sure the LCD always has proper ventilation. NEVER cover the top vents with anything. I would also avoid placing the LCD near any external heat sources like heaters or areas of your house that stay too warm. If you have the mechanical aptitude, add/modify the existing heat sink on the GPU and/or add a Processor cooling fan. Even a small fan silent fan placed behind the LCD blowing up and toward the top center back of the LCD is cheap insurance.
If you have any job openings, please consider this my application and cover letter. Experience/Education: former IT Director and recently laid off from that position, former Chemist, pre-med degree from LSU, above average troubleshooting skills not limited to electronics. So Samsung, please feel free to consider me for each and every open position, seriously, hire me! I’m actually starting to get tired of working on my house and watching TV!!!!
Best regards, Ernest
Posted on Apr 05, 2009
Replaced my A/S T CON board (Samsung Part Number: BN81-01286A)
and my TV IS ALIVE AGAIN !!!!!!!!!
Got it from www.partstore.com. Delivered overnight for an extra 30$. Install instructions are on this website. I'd say a 5 out of 10 on a difficulty scale.
Now time for the oath.
Repeat after me ......
"I WILL NEVER BUY ANOTHER SAMSUNG TV EVER AGAIN !"
Posted on May 14, 2009
The right name is logic board,,AKA [T-Con board]
In most LCD it is part of the main board,,
If you have sound, and the back lights kick in,,, it's the logic board ,,, in most cases the screen will flicker when you try to change channels with no menu or sound bar.
Posted on Feb 14, 2009
Solution no.14 is correct. I did purchase (142.00) and install the card. Having spent 25 or so years desining boards I can assure you the micro connectors will not take much horsing around. Sqeeze the ears on the top connector, flip the black plastic bar up on the other 2 connectors. In addition some caution must be taken to eliminate the chances of static electricity ie. keep the board in the bag until its time to install. My set had 3 screws at the top bar and I too drilled 5/16 holes in the top of the housing. The foil shield is also important and should be replaced and taped down to the shield cover as good as you can with electrical tape. The entire task took about 1.5 hrs with a 2 on the 1-5 skill level.
Posted on Feb 19, 2009
I wrote a while back on this thread that I had the same problem. At the time, the T-Con board was on nationwide backorder and nobody had any idea when it would be in stock (it sounds like they are now in stock from recent posts). However, I would still be worried that this board will fail in another year or so since it's the identical part in the identical TV; ask yourself why you'd expect it not to fail. My TV was out of warranty but I repeatedly called the customer service at Samsung and argued that this was a defective TV and they should do something about it. After much complaining, I actually got them to send me a brand new model, the LN46A550, which is the 1080p version of the TV being discussed here. I had to pay an additional $300 (which is what they valued the new TV above the LNS4692D) since it was out of warranty but I thought this was an excellent deal since the T-con board was around ~$200 with shipping anyway. They delivered the new TV for free and took the old one away. This new TV has a much nicer picture than the old one (even at 1080i resolution) plus it has higher resolution for blue ray and any gaming systems you might have. Also, the new TV comes with a new 1 year warranty and it does not contain the defective board since it's a different model. I highly recommend this course of action. For those still under warranty, you probably can avoid paying the $300. If they only offer to replace your T-con board , make the argument that the board is likely to fail again, and next time it won't be under warranty! tell them you want a new TV. One last piece of advice: there are several tiers to Samsung customer service. When you call the main number, ask to be connected to "Executive Customer Service". This will put you in contact with someone who actually has the authority to get you a new TV. I hope this helps.
Posted on Oct 14, 2008
The defective part on your tv is actually called the Lcd controller board. Most of the Samsung models do not have this as a part that is separate from the panel but this model does. It is taking me about a week to get the part in and it is less than 250 dollars from Samsung. It has fixed all of this particular model with sound no video and a back light that changes.
Posted on Feb 04, 2008
Buy a different brand...SAMSUNG=some suck..
Posted on Sep 19, 2007
My TV (same model) had the same problem except the sound worked (no picture, but the back light works).
Samsung is replacing it with a new model due to a long delay getting a replacement panel.
The TV failed 2 days before the warranty expired.
The new TV has better specs & is now less then half the price of the original.
The repair guy said it's cheaper to replace LCD TVs now then to get them fixed - he said he wouldn't even call a shop unless it's under warranty because you'll just spend hundreds of dollars only to find out a better replacement is cheaper then repairing the old one.
Posted on Nov 22, 2007
We had this same problem as well, same model (LN-S4692D - 46in) It lasted a good 3+ years though so I guess we should count ourselves lucky compared to the others? Still, it's ridiculous to spend so much to only last so long.
Anyway, thanks to this board, I ordered a new t-con board, got it overnight, took the whole thing apart and swapped it out and now it works again, yay! We are NOT tech savy at all so we were pretty proud of ourselves! Thanks everyone !
Posted on Jun 30, 2010
My Samsung TV is just two years old and I do not get any picture but the sound is fine. I called samsung they don't care. can some tell me what is wrong, and how can I fix it. Appreciate your help.
Posted on Apr 27, 2009
Hi my name is Jorge I had the same problem-that is sound but no pictures.Thanx to the postings here I purchased the T-CON board and sure enough it solved my problem.T.V works fine now.Also be advised that the first board I bought on ebay was defective-I knew it was defective because I had the exact same problem.I called up,they sent me another one and that one worked.The whole process takes about forty minutes to replace.Please feel free to ask me any questions.
Posted on Apr 25, 2009
I purchased a T-con board for $116 on ebay and followed the directions available on this website. It took under 90 minutes to fix and the TV works better than prior to the problem. Color saturation is noticeably better with the new LCD controller board (t-con).
Thanks to everyone who posted directions and pix on this problem.
I would add that the two ribbon cables at the very top of the board were interesting to remove. The black "strips" of plastic holding them down need to be rolled from the top of the TV toward the bottom to release the flat ribbon cables. Then just reinsert the ribbon cables all the way to the bottom of their slots and "roll" the black plastic strips closed over them.
Otherwise the instructions were very easy to follow. I also color coded the dozens of screws with sharpies and color coded the muffin tins to match. Make putting everything back together very easy.
Posted on Mar 28, 2010
I have the same probelm. Exact same TV, about 18 months old. No video, just audio and it just went on me. No warranty, and the tech suggested to take it in somewhere. I started looking online to get an idea of what kind of cost I was looking at. Based on what you have posted here, and the pics (thanks for that) I have ordered the part called the T-CON from Samsung and will give it a try.
I will NEVER buy samsung again. I had went through an extensive process with a home theatre package that broke down 3 times. I had been told after 3rd time, they'd replace it but guess what? They didn't and I told them how unhappy I was. I tried to tell them basically look, I buy a lot of electronics and so do my friends and coworkers. In fact, I told the guy I'd get more use out of their product if I took it behind the house, lit it on fire, and had my friends over for a beer to tell them the storey. So if you guys continue to send me **** replacements, I'll just go buy a sony. They didn't care, sent me 'refurbished' replacement units etc, etc.........So after about 6 months of BS and all that, they told me to send it to the Future Shop I bought it from, and they would contact the store to let them know it was coming. So I got store credit in the end and bought a sony which I've had no trouble with. I tell you, if this works when I move next year I'm likely to sell off my 46er and buy a new SONY or LG or AQUIOS.
No more Samsung after I get rid of this TV. No phones, no electronics. Nothing.
Posted on Oct 14, 2008
The TV is fixed. I just want to say thanks for bjryskie for giving me the courage to purchase and install the board on my own. This was not a simple task. There are many screws first of all. The most important part is to be very gentle when removing the panel that rest above the T-con board. There is a ribbon that is connected to the board that is secured to the panel above it. Also, very important is to secure the two ribbons in the two slots on the board and snap in, but to not push the "orange" ribbons too far in, or you will have problems with your picture. I pushed the left most ribbon in too far and it caused the left half of the picture to be 70% lighter than the right had side which was normal. I had to remove the left ribbon, reseat it, then snap in. But I did not push it in as far as I did before and it worked!!! You will need one person to help with balancing and securing the board unless you decide to completely remove the entire panel above the board, (which I didnt).
All I needed was a picture of what the board looked like and where it belongs and I was fine. You can find a pic of it at the AVS forums here. http://www.avsforum.com/avs-vb/attachment.php?attachmentid=118863&d=1220531321
(I hope this is ok.) You may have to register to view the pics however.I've seen a lot of people say its just easy, but that's not entirely true. You must be very careful when pulling any thing out. Hope this helps!! Good luck.
Posted on Sep 08, 2008
Replacing the T-Con part fixed the problem for my set. I hope this fix lasts more than 18 months. Good luck with yours!
Posted on Sep 04, 2008
Same thing happened to me! I haven't began to try to fix mine yet. But, I would strongly urge people to contact the BBB so others with the same problem might get some satisfaction from Samsung in the future. With enough of us reporting, they can't sweep this problem with the TV under the rug.
Posted on Aug 29, 2008
Hey Ranshon, don't get too excited. I bought a 4661 less than a year ago. I has the same problem! It's gonna go out too.
Posted on May 26, 2008
I had same issue with same TV. It's 1 1/2 years old. I still haven't heard from the shop what the issue is yet. Samsung should offer to fix this issue at little or no charge to the consumer - whether or not the warranty has expired. Nobody would ever spend over $3K for something and expect it to work less than 2 years. I will never buy another Samsung TV - that you can count on.
Posted on Apr 21, 2008
Call Samsung and tell them your problem.
Even though my TV was 13 months old Samsung sent someone out for an in home warranty repair. They determined that the LCD panel was bad. The part was back ordered with no expected delivery date. They replaced my 720 TV with a brand new 1080P model (LNT4661FX) with twice the contrast ratio. They also gave me a 90 day warranty on the new set.
Posted on Apr 22, 2008
Your t-con board is bad.
Posted on Sep 03, 2015
Start buying American products People. . .
Posted on Jan 26, 2014
Seeing the same problem with my 18-month old LN46A550P3F. Tried contacting Samsung Customer Support, and they stonewalled, just saying they would do nothing with a TV out of the 1-year warranty. Very frustrated with their response to this problem.
I've ordered a T-CON board replacement, to try my luck that way. Anyone tried replacing that board (part no. BN81-01696A) on this model TV? Here's to hoping that it's not terribly hard.
Posted on Mar 27, 2010
An update on my situation. I had the same exact problem as everyone else. Sound, but no picture 4 months out of warranty. No help whatsoever from Samsung. After reading some very helpful posts on this forum I decided to try and repair it myself. I ordered the t-con board for about $116. Received the part, tore the tv apart, installed the new t-con board, reassembled and it is now working again. For how long I don't know. I am very happy it's working again, but how long will it last? Just waiting for it to go out again. Pretty simple repair process. All you need are basic tools and some common sense. Just be gentle with everything. I butchured some parts taking it apart, but now that I have done it it's a piece of cake. Good luck to everyone with this problem. Samsung can go #@&% themselves.
Posted on Dec 23, 2008
Had the same problem and went bad at a year and a half but had the circity city extended service plan and this is what they replaced --pcb main and logic boards -- hope this helps
Posted on Oct 28, 2008
It sounds the same as our problem which was the T-Con board. We replaced the T-Con board ourselves after ordering the part from samsungparts.com. It was a lot of taking apart to get to the right part to replace but we got it put back together and it's working now.
Posted on Oct 14, 2008
Just wanted evenryone waiting on this part to try and fix their sets to know that the part is now available at samsungparts. Please post your success / failure rate after trying it.
Posted on Aug 29, 2008
Same problem but I have the LNT. Official sponsor of the NFL what BS.
Posted on Jun 01, 2008
Yes OldRepairGuy, did you get your replacement and which one...I've got the same issues as everyone else here and if it's not resolved, I'm going to the media just to say screw you SAMSUNG!
Posted on Jan 26, 2008
Oldrepairguy did you get your replacement TV.
Posted on Dec 21, 2007
I Have the Exact same problem. No Picture on Samsung LN-S4692D 46 in. I spoke to SUnsung and they said its under warrenty and will send a tech to have a look at it.
Posted on Dec 17, 2007
I had a similiar problem with this TV. It will power up the screen for about 1-2 sec and then goes black. The sound stays on. This happened with the humidity was 69%. I read through many posts and some suggest humidity may be a problem. So I turned on the a/c and dried it down to 60% 70F and sure enough the TV powered up normally. I am watching TV now. This is worth a try before calling the repair man.
Posted on Jun 22, 2009
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