Me too. Replaced capacitors.
Love this thread.
The Samsung customers here are actually solving the problem themselves and the Samsung HD Tech just posts, "Sorry to hear that," "You may need to call service," and "Keep me posted!"
Anyway, my 42" LCD crapped out with the clicking noise about a month ago and I replaced the faulty capacitors that shipped with the unit, despite never having used a soldering iron in my life. Unfortunately it died again this morning. No clicking, just dead. Guess I'll be cracking it open again to see if I can fix what Samsung won't.
The capacitor fix that's been succesdful for many is described in this video:
and elsewhere in this thread.