Samsung 46" LCD TV stops responding

Please check in dark room condition if you can see the light come up in the background of the tv LCD. If you can see light it would be a T-Con board or main board problem. I think those tv had some issues with the T-con board.
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you should try to replace the Timing control board (T-Con), it is showing signs of DC-DC converter about to fail for good. Good Luck!

Sounds like a circuit board problem , it goes on and off several times before staying on . It stays on after it warms up and makes a full contact . i would suggest calling samsung support . or take it to a reputable service agent . You did not say if it is still under warranty .

You can call 1-800-samsung to find out if your unit is covered under a special warranty for this problem. A couple of capacitors have failed on the power supply board and need to be replaced.

Hello,

First check the warranty, some Samsung units have 3 year warranty. If the unit is not covered under warranty then you will need to either repair or place the power supply board. If you want to do the repair yourself then go to our web site at:
www.ccl-la.com/capacitors.htm and look over the pictures and information. Then open your TV and get to the power supply board, after unplugging the unit. Look for the parts called capacitors that are bulging like the pictures on our site. You will need to unsolder and replace them, then your TV should be back alive again. The values that you will need to get are going to be marked on the sides of the ones you take out. Our page will have details about this. If you don't want to do the repair yourself we do offer a repair service for $45 plus shipping. Contact us at [email protected] for more information.

Buddy
Corporate Computer
www.ccl-la.com

If the main board has been replaced and it only does this when watching though the antenna input then there is a reception problem ,weak signal. Call Samsung ,this is under mfc warranty and they will make sure it gets fixed.

Have you try the other inputs?

I would suggest to try all the other inputs and if you're still getting a black and white picture then that would mean a defective main board. If your TV is less then a year old, still cover under manufacturers warranty.
Let me know if you need further assistance.

Need to get warranty service & replace the main board

Hi...there,
It's seems your backlight lamp is burnt out... if you are still under warranty... call the mfg. up and get a replacement lamp.

We have the same problem with our 46" Samsung LCD Tv LNT-4665F. It's only 2 years old and unfortunately it's out of warranty too. Our tv would not power on and just does this clicking sound. We called to get it serviced and we will need to pay $95 to have somebody comeout and diagnose the problem or we bring it to the shop and pay $50 to diagnose the problem. we've never had any problem with our SONY TVs. we regret buying Samsung!