I have the 3 blinking lights problem on my HLN4365W. I didn't have this problem with my HLM617W in over 4 months of use. My new HLN4365W developed the problem in less than 3 weeks. The problem surfaced at the worst moment, when I was proudly showing the TV to my visiting brother, a Sony GWII owner.
When I turn the TV on, the picture comes on, but within a few minutes the picture goes dark and the front panel has 3 blinking lights. Its suppsed to be a problem with the lamp system - obviously not a fused bulb because I do get the picture for a few minutes. I am not the only one who has this problem with this set. See:http://www.avsforum.com/avs-vb/showt...hreadid=256956
Luckily, PC Richards, the retailer, has been very good in providing support. A service person will come and check it out in the next day or so. They are also willing to exchange it for a new set if it can't be readily fixed. I'm keeping my fingers crossed.
We need to make Samsung aware that the problem is still persisting with the HLN series. They have claimed that less than 5% of HLM series had this problem - a combination of fused bulbs and improperly seated lamp assemblies.