I plug it in and the standby light came on like normal, but when I tried to turn the power on, the standby light went off and nothing happened. When I press the power button again the standby light comes back on. I have tried unplugging it, letting it sit and then plugging it back in again a few hours later, and it sill won't power on. It does make a low buzzing noise all the time, nothing loud. Any suggestions on how to fix this?