Tv won't turn on

I have a Samsung plasma tv PN50A450P1DXZA. The tv was on when we had a power outage and it would not come back on after the power did. I unplugged it and pushed the power button for 2 mins as suggested by Samsung tech support. I plugged it back in, heard 2 clicks, but will not turn on. The red standby light is on... Any suggestions? Thx!!