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My samsung le40a557p2f won't switch on at all. It started taking longer and longer and now won't turn on at all. It did this once before and Samsung came and repaired free of charge but now it's out of warranty. My nextdoor neighbour has the same TV and has had the same problem. What can I do?

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Posted on Jan 02, 2017

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SOURCE: 6'' Scratch in Samsung LCD TV

THE ONLY WAY I KNOW HOW TO FIX THIS PROBLEM WOULD BE TO REPLACE THE DISPLAY PANEL UNFORTUNATLY THE PRICE IS WHAT THE SET COST ORIGINALLY TRY RUBBING THE AREA WITH A DAMP T SHIRT OR DIAPER IT MAY HELP OTHERWISE I AM SORR FOR YOU

Posted on Nov 14, 2008

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SOURCE: Samsung LE40R73BD Will not switch on

I found a fix for this problem on another forum, It's caused by some blown capacitors on the main power board. I have a link to the original post, with step by step pictures for replacing the blown capacitors but don't know if it's ok to post it here. The repair cost me £7.49 for 5 capacitors RS part number 526-1109 and about £4.50 of that was for next day postage. I did the job myself in about 15 minutes and I have no experience with a soldering iron (i even had to borrow one). I replaced 3 capacitors, 2 of which looked blown and one which just looked swollen.

Remove the back off your tv, and just take a look at the small array of capacitors near the top right corner of the centrally situated power board. there are 4 identical capacitors rated at 1000uf 10v 105 degrees C. I think the silver capacitor lids should be flat or even slightly concave. The ones I replaced were all slightly convex and 2 of them had a tiny amount of what looked like brown corrosion right in the centre of the caps.

For a few quid I'm sure you could get someone else to do the soldering if you lack confidence.

The original post also linked to a supplier of the main power board for £130. I didn't mind having a go myself because I figured if I fouled up I could always just buy the board.

Posted on Apr 15, 2009

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SOURCE: My samsung tv turns on and off repeatedly at

Mine was doing that then it quit even turning on so I replaced the 4 Capacitors today on the power supply board that had bulged up on the top 3 had split open they where on the top right corner of the board where the ribbon jumps from the power board to the main board with ones from Jameco Part Number 606521 they worked perfect but make sure you put them in with the correct polarity easy to do just keep an eye on it. Very simple repair and took me about 30 min to take itapart solder on the new ones and put it back together all for under $10.

Posted on Jul 09, 2009

dave1645
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SOURCE: Samsung 26" LCD TV will not turn on

you have one or two bad caps in the power supply these can like devices will be puffed on the top from venting the value is wrtten on the sides replace them and you will be good to go

Posted on Nov 06, 2009

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