have you checked your remote lead? Ive had brand spankin new fuses be bad, and no it wasnt blown, it actually caused a 9 volt drop across it...that was a funky problem. Do you have for sure 12 volts to the amp? If the car is running it will be 14.4 volts. I suppose if you dont have a Volt Ohm meter it is alittle tuff to see that. Have you got a good ground? Checked all the fuses??? exhaust all posabilites.