FAQ What should I do if the fuse blows? Check if the red and black leads are connected correctly. Also, ensure that the yellow lead is connected as well.How do I troubleshoot if there is no sound from the speakers? Check if the speaker output lead is short-circuited or grounded. Verify if the terminals of L and R speakers are properly connected.How can I prevent the unit from becoming hot? Ensure that the speaker output lead is properly grounded and that the terminals of L and R speakers are not grounded in common.