Question about Samsung LN-T4071F 40 in. LCD HDTV

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My samsung lnt 4071 will stall when turned on. If the tv has not been on and warm and I turn it on while cold, i t takes about 3minutes to start. I hear a click sound.

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Take ur tv aparts,the power supply board it where u plug in the a/c power cord in it.U know basic electronic and soldering?Ur tv power supply board have dead parts it call capacitors,these capacitors they bulges up on it top or puff up on it top.Replaced these dead gases leakages capacitors.Ur power will turn on normal cold or hot.Or tries websites like, to buy a whole refurbish power suppply board for the replacement.

Posted on May 12, 2010

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1 Answer

My samsung 46" lcd tv

This could be due to dry or cracked solder joints which are fine when the the TV is cold but lose connection when the TV warms up. If you are able to use a soldering iron and have good eyesight then you may be able to try fixing it yourself, otherwise take it to a TV repair shop.
Accessing the circuit boards can be quite difficult without the correct tools and you may cause more damage instead of finding the fault.

Feb 15, 2011 | Samsung Televison & Video

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I have a Samsung LNT 4069 40 inch TV. I have had it for about two years but lately when we turn it on it does not come on as usual but goes through several clicking cycles and sometimes takes up to 2...

This is a problem with some capacitors on the power supply board, they have defective formula. The ESR levels are high and they can't hold their operating voltage. If you have an extended warranty by all means take it back exchange it for a new TV.

Nov 17, 2010 | Samsung LNT4069F TV

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Samsung LNT-4665F won't power up properly

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.
You can get parts for your TV here:

Dec 09, 2009 | Samsung LN-T4665F 46 in. LCD Television

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My tv is having problems turning on when it's

you have a couple of caps going bad on the power supply. look at the power supply and you will see some caps puffed up on top just replaced them with some of same value.

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Samsung LNT-4665F takes several minutes to turn on

This could be the power supply problem, or the main board. You need technician to fine out what is going on.

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1 Answer

Image is grainy whenever tv is cold

try having the v_set and v_scan voltages reset 15vdc lower..

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