Discovered this thread, and after contacting Samsung, was told my 40" LCD TV was "not in the affected range" as they were only fixing sets made through December 2008. Of course, my set was marked, January 2009. Go figure!
Pulled it open anyway, and quickly found two 1000uf capacitors with bulging tops on the power supply board. The three slits on top of each were black, perhaps a tell-tale they were failing? Anyway, dug around and found this vendor with plenty of parts:
Their part number 69K7911 ( link / $0.31 each) translates to a 1000uf capacitor with the 25V and 105 degrees C rating. I ordered four for the princely sum of $7.92, including UPS ground shipping. There were an exact physical and electrical match.
I have average soldering skills, so it was routine to use a light-duty soldering iron to remove the old caps. Gently soldered and sniped the excess leads, taking care not to burn/damage nearby parts, then plugged in, and Volia! The set turned on almost instantly.
FYI, my set is a 40" LCD, model LN40A520P1F / LN40A520P1FXAZ, serial # ALD12CSS100072D, mfg. Jan 2009.
Kudos to all who contributed.
a. One of the capacitors was caulked/glued to a nearby part, which required a razor to separate them prior to unsoldering.
b. I have two spare caps, if anyone wants 'em, let me know. rscoats at comcast dot net
-Robert / Atlanta
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