Unplug it for a week or so. then plug it back in and it will reset. It must take awhile to discharge the capacitors in the machine to reboot the thing if you get a voltage spike or anything. Ours did that too once when the electricity went out suddenly. Then it wouldn't turn on.

I took it over to my house and left it set for a week and tried it again and it worked fine. So I took it back to my mothers house and used it. It's still working three years later.

My expensive JVC did the same thing to me.