Question about Samsung LN-T4053H 40 in. LCD Television

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About how much should I expect to pay to have the power supply board replaced by a tech. or repair shop. Again, the TV is a Samsung LN-T4053H.

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  • csofsc Nov 13, 2009

    Symptom: upon turning on, the TV turns on and off continuously, along with the usual clicking sound it makes when working properly ... but has progressively taken longer & longer to actually stay on. This started about 1 week ago. Sorry, I've no pics of the power supply, as i am not a tech. & haven't disassembled anything. I was advised the P.S.B. may be bad.

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The power supply module can be from $179 plus tax and shipping from
http://www.discount-merchant.com/ProductDetails.asp?ProductCode=1040332-SAMSUNG&Click=35

The labor can be up to 2 hours. Do you have pictures of the bad power supply and the symptom?
Please post back what you find.

Posted on Nov 13, 2009

  • Bud Martin
    Bud Martin Nov 14, 2009

    OK, it does sound like you need to get the new power supply module, hopefully when the power supply fail it did not take out other circuits with it. You may be better off get the new set. It is sad that they do not make TV that last more then 3 years these days, the average age of the LCD TV sets and computer monitors I repair are about 3 years old, and it does not matter what brand either!

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1 Answer

Samsung LN t4053 H. Clicks on and off, on power up. Sounds like bad caps. How do I get at the caps on the power supply board


Samsung LN-T4053H:
If this set is under warranty you should return it to get it repaired/replaced by the seller. If not then;
This sounds like the power supply board could be failing. The electrolytic capacitors on the board may need to be replaced. It may also be a voltage regulator.

IF YOU KNOW HOW TO WORK WITH ELECTRONICS REPAIR(soldering ) or have a friend with knowledge/skill you can fix it.

>Unplug the set and any cables.
>Remove the back cover. The power connects directly to the power supply board.

>look at the capacitors on the power supply board. If the top of any of them are bulging up then that is the problem.

>You will have to replace ALL the electrolytic capacitors except for perhaps the large one.
>Disconnect and remove the power supply board. Handle by the edges to prevent contaminates and static electricity.
> Use ones with the Low Equivalent Series Resistance ESR rating
> Use ones with the same farad rating

> Use ones with the same or higher voltage rating
> Use ones with high temperature rating
> Install one at a time to prevent mix-up and keep the polarity correct.

> Leave a space between the PC board and the bottom of the capacitors for expansion. They heat up.
> Replace power supply board and reconnect cables..
> Replace back cover.


THIS IS AN INDUSTRY WIDE PROBLEM AFFECTING MANY COMPANIES AND PRODUCTS.

Sources for some good capacitors are www.digikey.com or NTE. Try nteinc.com for a local outlet of NTE products.
You can also search for other sources. Some companies even sell all the capacitors in a kit.


Total price of parts should be < $30.00

Yes you can buy a new power board but if the capacitors have not been replaced they will eventually fail also.




The power supply board looks like;
012411_-26.png

Mar 13, 2011 | Samsung LN-T4053H 40 in. LCD Television

1 Answer

I have a samsung ln-t4053h that had a bad caps. I replaced the caps and the tv turned on fine and i put a flashlight to the screen and the screen turns on but the backlight is on 10 and it looks like its...


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 23, 2017 | Samsung LN-T4053H 40 in. LCD Television

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My Samsung LN-t4671F LCD TV clicks for about two


You are having another problem with the power board...there are some capacitors which are easily replaced to cave you the cost of the board. If you are technical,I can guide you further,other wise a reputable shop can fix this very reasonably

Jun 07, 2010 | Samsung LN-T4665F 46 in. LCD Television

1 Answer

Samsung LCD Screen powers up for 1 minute then goes black.


Most likley there are some bad capacitors that need to be replaced in the power supply, in particular the ones that are "10 volt" types. As a tech...I LOVE to see these sets and or//power supply boards come in as it is "easy and quick money for me" and a quick and lasting repair for the customer. A decent shop should be able to repair your PS board for under 350, in home service.

Oct 09, 2009 | Samsung LN-T4053H 40 in. LCD Television

1 Answer

I dropped my Samsung LN-T4053H 40 in. LCD


yes. sorry to deliver bad news. cost to repair is 90% the cost of when you purchased. panel is around 400-500 plus your labor. samsung may have flat rate program but still is not very economical. sorry again.

Jun 04, 2009 | Samsung LN-T4053H 40 in. LCD Television

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No Video, No Sound


Hello, This might be a board with a loose connection or a faulty capacitor on the power board or one of the immediate circuits attached to the power supply board. I would suggest that you have this serviced by a qualified TV Technician. However if you wish to do this yourself, you need the following equipment: 1) Multimeter (to measure the voltages; AC and DC on the various test points on the boards) 2) Oscilloscope (to measure the startup and shutdown circuit ramp voltages) 3) Isolation Transformer (to isolate the Tv from the AC circuit that the test equipment is on) 4) Service manual or schematic diagram (to show where the test points are and what signals and voltages to expect) 5) Signal generator (to generate reference signals for servicing the TV) Now if you know how to use these pieces of equipment your are ready to start, if not again I would advise you to have the set checked by a qualified TV repair technician. I hope this helps Thank you, Shuttle83 http://www.electron-age-technologies-llc.com

May 22, 2009 | Samsung LN-S4692D 46 in. LCD HDTV

1 Answer

Samsung LN-S4051d power supply board


The replacement of the power supply is quite easy. You will have to remove the base if applicable and the back cover, once you remove it; you should see the power supply.
Click here to see how the power supply looks like and availability or Click here to find a cheaper one.

I can also repair your power supply. If you need further assistance you can write to jah2mil@hotmail.com

Jan 05, 2009 | Samsung LN-S4051D 40 in. LCD Television

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