My parents have a 27" Sharp, and it's around 10 years old. For the past couple/few years, when I press the "Power" button on the remote or TV, sometimes it doesn't turn off completely (when you see the white thing go on the screen for less than a second). If it was turned off like that, I would just turn it back on for a second, turn it off, do that for a few times, and it would go back to its usual ways. But when returning home for winter break, it's never been completely off, and thus, I sometimes hear a humming noise from the TV speakers, which will go away when I turn on the TV. This morning, I unplugged the TV to see if it would temporarily solve the problem, but it turned "on" right away when I plugged it back in. Is this something I should worry about, or will it be fine as is?