No Power

I tried to turn my set on tonight with the remote, and when it didn't turn right on I hit the power button a few more times, figuring maybe my batteries were low. When it didn't work, I went over to the TV and pushed the power button on the set. As I did that, I realized the blue standby button was blinking. It stopped when I pushed the power button. That's when it dawned on me that that standby light is always on and never blinked before. Now it's not on at all and the TV won't turn on. It worked perfectly fine earlier today, it's just all of a sudden I get nothing. Any ideas? Thanks in advance.