Top 10 Samsung LN-S4692D 46 in. LCD HDTV Questions & Answers

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!

I had the same problem with a 52" Samsung LCD. I found 2 electrolytic caps with bulging tops on the power supply board. (see pic). I looked to be the 5v section but I'm not sure. I got replacement at Fry's for $1.90 each. All is well!
Ahwatukee Al

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.

can purchase just t-con board online for small fee and replace yourself. ShopJimmy.com
ours went out after 5 months and it was still under warranty. samsung wanted us to send it to them and it would have cost me $70. i just bought the part online for $20. way better deal

The fuse is located just upper right to the connector that attaches to the main board. This is a SMD pico fuse that is rated for 3 A @ 32 V DC that protects the Vin bus. Replacing the fuse may not fix the problem as it has most probably opened because of failure of another component.

It's on the T-con board itself at location Cp1 which you will find printed on the board itself.. The fuse is a tiny s/m (surface mount fuse but you can use a pico fuse of same value. According to schematics it's a 1.5a fuse. Simply solder one across the s/m fuse and if it opens then change the board. Samsung p/n# Bn81-01286a
To test the fuse use a VU meter set to continuity.
Pico fuses are readily available at almost any electronics supply outlet. I get mine from ACME Sales in Florida (least expensive) but even your local Radio Shack might sell them...
Bill

I think you need to exchange the Main Board.

The back light inverter board may have gone out or it is not getting the 24vdc from the power supply module. Start checking for voltage feeding the inverter board.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Samsung+LN-S4692D+

First of all stop trying to turn the tv on because you can damage a second board by repeatedly attempting to power the set up after a power supply failure. I have seen it on this model. Usually what happens to this set is the power supply filter capacitors fail. If you were to look at them you would see they are physically bulging. These capacitors are rated at 2200uf/10volts. They can be changed with a higher voltage capacitor to outlast the original components. If you choose to replace the entire power supply more than likely this will happen again in a few years. Anyone who can solder somewhat can replace these parts and repair the problem. A reasonable repair cost for this repair would be between 95-175 at a repair shop. Good luck, Russmann. You're welcome.

It can be power supply due to bad caps, bad main board, shorted circuits in the backlights inverter board so the TV goes into shutdown mode. You will have to do in-depth troubleshooting, please read my guide first if you decide to DIY repair.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.