Question about Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

I have a samsung LN-T4042H, and one day it just randomly turned off. Now if i try to turn it on, it gives me this flicking sound. I think it might be the capacitor, any advice?

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.


    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 132 Answers

This model has a history of bad electrolytic capacitors on the power supply board. I would definately start by looking at all of them. If any of them are bulged or domed on top rather than flat, then you should replace them. Just make sure you put them back in w/ the positive and negative sides in the correct position. Good luck!

Posted on Sep 03, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

When I attempt to turn on my TV with my comcast provided remote the TV makes a clicking sound but does not turn on. I have to try random entries on the remote i.e. pressing tv t(plus) power, cable t...

You may want to check this:

There is no guarantee the problem is the same, but it is likely. The TV is different and the power board layout will likely be different, but the concept is the same.

In addition, it is possible that the problem is not in the power, but in the main board and if so it may not neccessarily be a capacitor.

But hey, it works one step at a time...

Please rate this article if it helps.

If you have questions or need professional look at your board feel free to contact us directly.

Oct 18, 2010 | Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

I have a Samsung flat panel television, model #LN-T4042H. When I turn the tv on, it sounds like it is turning itself off and on repeatedly for more than 5 minutes before I finally hear the beeps that...

Take ur tv aparts.The power supply board is the board that ur power A/C power cord go into it.U know basic electronic.U have soldering iron,know soldering,and solders?Check all around the power supply board.Look all around the power supply board,check and see find any defective gases leakage capacitors.These dead capacitors alway have bulges or fuff up it top.Replaced these dead gases lekage capacitors will solved ur power problems.Or tries Websites like, to buy a whole refurbish power supply board for the replacement.

May 11, 2010 | Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

My ln-t4042h turns on and stays on for a while and then the screen goes blank then coming back on and off then stays blank. Also while it is actually working you can see the brightness fading in and out.

U have sound,after picture fated?Ur LCD inverter board it dead.must replaced this board to get the picture back.It usally a long board.Tries, for the board part.

Feb 06, 2010 | Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

Samsung LN-T-4042H the picture is flashing. How

Look for screen setup for AUTO ASPECT in the setup menu, turn it OFF.

Nov 07, 2009 | Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

When I try to turn on my Samsung LN-T4042H LCD HDTV it is now constantly clicking in a continuous loop and will not immediately turn on. It started out small- a few clicks yesterday morning. Today it...

There is a problem with the power supply in your TV. The regulator switch is causing teh clicking sound you hear. In order to fix it, you will need to replace the power supply. This is done by taking off the back cover of the TV, locating the power supply which is usually a yellow board that will have many high voltage capicators on it and replacing it with a new one.

Nov 06, 2009 | Samsung LN-T4042H 40 in. LCD HDTV

1 Answer

Samsung LN-T4042h to PS3 "Not Supported Mode"

i fixed it, on the PS3 u hold the power Button while holding then Switch the power button on on the back for like 10 sec and it resets the picture settings to default

Oct 24, 2009 | Samsung LN-T4042H 40 in. LCD HDTV

Not finding what you are looking for?
Samsung LN-T4042H 40 in. LCD HDTV Logo

Related Topics:

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74198 Answers

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1667 Answers

Are you a Samsung Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides