Question about Flat Panel Televisions

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Sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?

I have a samsung LCD lns4692d, and the picture no longer comes up on the screen, i can go through multiple sources get sound but no picture. Usually when you change sources there will be a source name on the screen which does not show up anymore. The LCD is backlight, and you can see when you change channels or sources it flashes, but never a picture. Based on other comments I have taken the back panel of the lcd tv, everyone else who had this issues states this to be a issue with tcon (timing controll board) /lcd controller board. Is this the same board where the audio video sources, antennae and cable plug into?

BN94-00963B ASSY PCB MAIN-SPZ LNS4692WX/XAA,AM LCD I have a samsung le52m87bd which has a picture for about 2 seconds when first turned on but the screen the goes blank. Sound stays on. I have seen other posts about another samsung model which seem to say you can replace the t-con board but i am unclear if the problem is the same for this set and if you can get a separate t-con board for the m87 series

Any ideas? Thanks

Posted by on

  • dlac Oct 05, 2008

    Thanks Shinayo - to confirm - will this help fix a LE52m87 (not the lns model)

  • dlac Oct 05, 2008

    fantastic - i just shone a torch on the screen and can see the image is there.



    Sorry to ask another couple of Qs but



    Do you think its worth getting a service agent round and trying to push samsung that its a manufacturing fault (its out of warranty)



    Is the backlight converter reasonably easy to replace ?



    Thanks so much. You;ve cheered me up.

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For bn94-00963b go and change your backlight inverter

Posted on Oct 05, 2008

  • olayoju victor Oct 05, 2008

    yes change the baklight inverter.

    thanks

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SOURCE: lns4692d no picture

No it is the little board underneath the metal container at the top middle of the panel..the very top.

-Josh

Posted on Mar 14, 2008

  • 1 Answer

SOURCE: sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?

I have LNS4692D. Returned from vacation, turned tv on - no picture. Tried turning tv off for 4 hours- nothing. Symptoms are: tv is on - no picture , just sound; menu doesn't show, volume bar doesn't show;E.Saving is working - the backlight is changing from lighter to darker.
Found this website and ordered T-con, otherwise known as the LCD panel driver board, p/n# Bn8101286a ( thanks premtech) from partstore.com for $124. Part number BN81-01286A A/S T-CON Board.
Installation:
1.Remove plastic cover. There is an arrow for each screw that needs to be removed. Make sure to unscrew pins next to VGA port. I've spent some time trying to figure out what else is holding the plastic panel until I found this pins.
2. Remove big metal shield in the middle of tv that is covering main components. This shield is being held by small black screws all around it.
At this point you will see cover of T-CON. Here is the picture
http://www.avsforum.com/avs-vb/attachment.php?attachmentid=118863&d=1220531321 (thanks ldac9). Do not attempt to remove that cover yet. Proceed with a next step

3.Remove metal panel that holds main components. Locate big chrome screws that have arrows pointing to them and unscrew them. Remove 2 more screws on the bottom of the panel that holds it together with a box for cables. At this point the main panel will be lose
4. Carefully start lifting the panel. You will see that there are connectors going from components on the panel to components on the lower panel and T-CON. Carefully unplug these components and raise the main panel.
5. Remove 4 screws that holds T-CON cover. Pull the cover so that T-CON is completely exposed. The cover is connected by thin alluminum , don't hesitate to pull it , but don't rip it out.
6. Once T-CON is exposed you will see 2 red ribbons. I've spent some time to figure out how unplug those from old T-CON board. Here is the suggestion. Don't try to pull it out. All you need to do is to lift small plastic lever that is part of a connector. Then ribbon can be slided out. If not sure what to do, see how this is done on the new T-CON. It has a principle of buckle on airplain safety belts.
7. Remove old T-CON and install new you.
8. Follow reverse order.

I've never fixed TV before , but this was totally successful project.

Posted on Nov 19, 2008

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21 Answers

Sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?


I have LNS4692D. Returned from vacation, turned tv on - no picture. Tried turning tv off for 4 hours- nothing. Symptoms are: tv is on - no picture , just sound; menu doesn't show, volume bar doesn't show;E.Saving is working - the backlight is changing from lighter to darker.
Found this website and ordered T-con, otherwise known as the LCD panel driver board, p/n# Bn8101286a ( thanks premtech) from partstore.com for $124. Part number BN81-01286A A/S T-CON Board.
Installation:
1.Remove plastic cover. There is an arrow for each screw that needs to be removed. Make sure to unscrew pins next to VGA port. I've spent some time trying to figure out what else is holding the plastic panel until I found this pins.
2. Remove big metal shield in the middle of tv that is covering main components. This shield is being held by small black screws all around it.
At this point you will see cover of T-CON. Here is the picture
http://www.avsforum.com/avs-vb/attachment.php?attachmentid=118863&d=1220531321 (thanks ldac9). Do not attempt to remove that cover yet. Proceed with a next step

3.Remove metal panel that holds main components. Locate big chrome screws that have arrows pointing to them and unscrew them. Remove 2 more screws on the bottom of the panel that holds it together with a box for cables. At this point the main panel will be lose
4. Carefully start lifting the panel. You will see that there are connectors going from components on the panel to components on the lower panel and T-CON. Carefully unplug these components and raise the main panel.
5. Remove 4 screws that holds T-CON cover. Pull the cover so that T-CON is completely exposed. The cover is connected by thin alluminum , don't hesitate to pull it , but don't rip it out.
6. Once T-CON is exposed you will see 2 red ribbons. I've spent some time to figure out how unplug those from old T-CON board. Here is the suggestion. Don't try to pull it out. All you need to do is to lift small plastic lever that is part of a connector. Then ribbon can be slided out. If not sure what to do, see how this is done on the new T-CON. It has a principle of buckle on airplain safety belts.
7. Remove old T-CON and install new you.
8. Follow reverse order.

I've never fixed TV before , but this was totally successful project.

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1 Answer

Lns4692d no picture


No it is the little board underneath the metal container at the top middle of the panel..the very top.

-Josh

Mar 13, 2008 | Samsung LN-S4692D 46 in. LCD HDTV

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