I'm sorry to hear that you're having issues with your TV.
You are likely still within the warranty, so I'd recommend calling 800-SAMSUNG and having a service technician appointment set up. You can have your unit inspected and if needed, repaired.
If you're nearing the end of your warranty and you're in the U.S., extend the warranty for 3 additional months by registering it online here:
The TV is just under 1 year old and recently started issues on start up. The power will cycle on and off a few times before finally sticking on. Some times its cycles once or twice some times it 8 or 10 times. From what I have found on the net and this forum it sounds very much like the issue that plagues the LN models. Is this a known issue and if so what is the fix?