Question about Samsung LN-T4665F 46 in. LCD Television

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Samsung LNT-4665F won't power up properly

I have a LNT-4665F 46" flat screen. Tonight when i turn it on the blue light at the bottom comes on, it gives it's power up noise, and the screen comes on for 1 second and then turns off. What could the problem be?

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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
You can get parts for your TV here:
http://www.shopjimmy.com/catalogsearch/result/?q=LN-T4665F+

Posted on Dec 10, 2009

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Posted on Jan 02, 2017

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Tv tries to come on but just clicks and clicks. seems to be powering it self on and off. Samsung LNT 4665F. Red standby light blinks on and off with clicking sounds. Blue Power on light tries to...


There are 3 capacitors in power supply board, all 1000uF10v.
2 for 5vdc and 1 for 12vdc. replace with best quality 1000uF 25V cap.
do it yourself repair will save you $300

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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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This may be a power supply fault, and what you are probably seeing is some switching noise breaking in through the display processor, or possibly the input processor. Because of the fact that the bar is moving, this means that the sequence is not locked to the main processors.

You should contact the place where you bought the set and speak to someone about an exchange. A one day old set should be exchanged right away, and I would argue that fact.

I don't want to mention any name brands, but I would have gone for a company that also manufactures TV broadcast and industrial TV equipment rather than one that manufactures appliances.

Jerry G.


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