Started experiencing this issue on Sunday ( Aug. 2nd). TV model LNT4061FX.
The TV started with the clicking on and off behavior for about 10min, would power on. Once it succeeds in staying on, initially I see the picture and get sound but there are multicolored pixels scattered across the screen. Seems, following an unspecified warm up period I can power the TV off/on and the pixels disappear. TV works fine until I turn it off again and leave it long enough to cool down. This happened for about 5 days, now the TV just clicks on and off. Never fully powering up.
Make a long story short. I started contacting Samsung once I noticed the problem. Finally got them extend our warranty for 30 days. Unfortunately, there are no Samsung service partners within a 50 mile radius from where I reside. Also, they only extended the warranty to cover parts not labor (likely the same defective part). After stumbling upon this thread I feel more confident that I can fix this issue and avoid paying for a service call.
I would like to get some opinions on the following pictures. It appears the top two capacitors in the picture are bulging at the vents. My eyes aren't the best, so if someone would mind confirming this before I go ahead and replace I would very much appreciate it.