Samsung TV Repair services on STT?

Any decent TV repair techs locally that can take a look at a Samsung rimlit LED TV? Mine's on its last leg... I have a feeling it's the logic board, but need an actual Samsung tech to be able to troubleshoot it.

It's a UN55C6300 Samsung LED. It doesn't like to behave turning on/off. Interestingly enough, hard-cut from its power (unplug) seems to alleviate troubles. After an hour of being cut off from power, it behaves for a period of time (anywhere from hours to days). Sadly, today, it decided to just shut itself off in the middle of watching Netflix. Seemed to have crashed, and now having troubles turning back on...