Same problem with LN26a450
I bought this TV expressly for watching the occasional movie via computer and for the Marantz stereo settings screen interface, nothing more......no DVD's, no cable, no satellite, just computer movies.
Lovely picture, zero fuss for 18 months until 6 months out of warranty.
Watching a movie one night and just turned off 1/2 way through and never turned on again.
Did some research online and all pointed to bad cap's.
Took the back of the tv off (very well layed out design I must admit) and saw no blown power supply caps, even though I hear that does not mean they are still good.
I did a little deeper search and found a number to call Samsung (800-522-7341) and talked to a nice woman in South Carolina who is sending me a warranty transition # and prepaid mailing slip to their repair facility in NJ where I presume they will make things right.
Probably just involves 10 minutes to take the back off and swap out the power supply board.
The innards of the TV are clean, simple and very well laid out and I was prepared to launch in to repairs of my own until I called that number and she ran the model and serial number.
It's a shame that Samsung TV's have so many of the same problems because they have a really beautiful picture quality and modern HDMI, TOSLINK and RS-232 PC video inputs that make them very appealing for the home theatre crowd.
I just wish, for the minimal expense to beef up a few critical components within the unit, they could have a trouble free product that people will tell their friends about and sales skyrocket.
(Please take that back to corporate Mr. Samsung HD guy if you are listening).
Being one of the 20 million unemployed in America, NOW was NOT the time I ever wanted to buy a new TV to watch my movies from time to time, especially when the unit is virtually brand new.
That being said, I also have a 23 inch Samsung SyncMaster 2333 computer monitor that looks great and has given zero problems (fingers crossed).
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