It's difficult to pinpoint an issue just based on the symptom - in this case, having a technician actually go in and figuring out which part is faulty would be the best recommendation.
My TV led's flicker on and off a few times before the TV comes on either blue or red with no sound.
When I run the sound through my Samsung surround system, the picture is great.
Do I have a power supply problem?
BTW, I downloaded the latest firmware from Samsung.
Also tried the following:
replaced cable box
replaced hdmi cord
ran cable straight to tv
replaced power strip
Thanks for the help!