To solve this problem you must first ensure that all the cables are connected correctly.  Second, you must check that these wires are in phase match. Make sure the negative wires are connected to the negative port of the receiver and the positives are connected to the positive ports. There is no short circuit created by two wires of your home theatre system. check if the speakers are consuming more power than your receiver is capable of.  if you are speakers are of 3 ohms and 5 ohms and your receiver is 8 ohms.  then your home theatre will not work.  check if the media source of the home theatre is running fine and is not faulty.