Question about Samsung LN-T4053H 40 in. LCD Television
Samsung LN-T4053H: Yes you can buy a new power board but if the capacitors have not been replaced they will eventually fail also.
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
The power supply board looks like;
Yes you can buy a new power board but if the capacitors have not been replaced they will eventually fail also.
Posted on Mar 13, 2011
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Posted on Jan 02, 2017
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