Question about Samsung LN-T4665F 46 in. LCD Television

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Samsung 46" LCD TV stops responding

Hi there, after getting my main board replaced under warranty i still have the same problem approximately twice a month. When changing between channels the tv stops responding. The channel number still scrolls up and down on the screen, but the picture stays black with no sound. Does it in either ant or cable input. Can't even turn it off with the buttons on the tv. I have to unplug it and plug it back in and it works fine. The warranty guy did no troubleshooting just r/r the main board. He said there are only 2 boards in this tv, a power supply and main board. Ever hear of this problem before> Thanks in adnavce for any advice, Kirk Johnson

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Re: Samsung 46" LCD TV stops responding

Ok, There are well three boards in this set that would influence such a behavior. The culprit is the Key Pad Board. It has what is called a leaky switch. This then locks up the Microprocessor. This will result in the set operating like a ghost has the remote.

best regards

Posted on Dec 06, 2007

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Hi, i have a fairly new samsung 46" tv with sound but no picture

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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LN-S4692D 46 in. HDTV LCD Television: tv toggles on and off...

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2 Answers

My Samsung 46 LCD clicks on and off and will not come on.


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1 Answer

Samsung LN-T4665F 46" HDTV Screen is BLACK - NO PICTURE

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Sep 26, 2009 | Samsung LN-T4665F 46 in. LCD Television

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Sep 11, 2009 | Samsung LN-S4692D 46 in. LCD HDTV

1 Answer

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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.
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Have same tv and same problem samsung lnt4665f

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!

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