DVDs and CDs placed in the turntable (5 places) show up as loaded (lights are lit) but they don't seem to be spinning. Can't play or get menus on any disk in any slot. When last used it was fine but haven't used the unit in a while. There could have been thunder storms or power outages in the meantime. I tried unplugging the unit and replugging to reset it, but no luck. HELP