My VU+DUO box gets hot on the Top left hand side at the back. Its been sent back to be repaired under warranty because of the red light staying on and not booting up.My son bought the same box has me last December and his box is cool. I don't no if my box was hot before it was repaired.My question is,are some box hotter than others? The box is well ventilated. Any imput would be most helpful