If you hooked up another amp and your sub worked fine then you know it is your amp. If you hook up another amp but still no sound it is either your sub itself or the wiring. Check all wiring especially if everything comes on but no sound then your RCA cable may have a problem. The sounds come through the RCA cables. It won't be your remote turn on wire if your amp comes on. The amp won't come on if the ground wire isn't connected right. Since it is coming on I don't think it a ground, amp turn on, or power wire. If you is a 2-4 channel amp you may have fried the channel. Try the other channel if that is an option.