Question about Samsung LN-S4041D 40 in. LCD HDTV

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My samsung tv turns on and off repeatedly at

My samsung 40" lcd 3 yr old tv turns on and off repeatedly at start up once it turns on it works fine. What could it be? Thanks

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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

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Samsung caps
http://www.avforums.com/forums/attachments/lcd-televisions/128595d1247354171-samsung-40-lcd-one-year-old-beyond-repair-caps.jpg

Above should be a link to a picture of the caps if not google " Samsung power supply caps" and look for other images.
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Once the back cover is removed the caps are obvious to spot (especially with that picture I forwarded) you need to label and remove all the plugs - unscrew the board from the chassis so you can get to the solder side of the board.
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Also google "Samsung power supply capacitor replacement" and there may be step-by-step instructions with pix.

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