Audio Systems: 98 Mountaineer factory stereo/cd/cassette, channel amplifier, factory stereo

Question
Hi and thanks in advance for any help....I have a factory combo c/d cassette wirh 4  speakers and 8' subwoofer and rear seat  controls. Problem 1. subwoofer was blown when got vehicle,and 2.lite display does not work.c/d /cassete works and controls and 4 speakers
I have replaced subwoofer but not getting any power to 2 wires to it?(took the original 1 out of the plastic housing) Is there a fuse or amp hidden somwhere? I have checked the ones in the side panel of drivers door. Is there anything to check for the  display? Or is that  maybe an internal problem? Anything I can check?
Would be happy tget subwoofer working display is not necessary for me unless  wire loose or fuse
Thanks

Answer
NO FUSE  there is a 1 channel amplifier for the woofer
this amplifier is bad you can get one from  www.oemautosound.com    the radio power supply board is damage  most of the times it can be repair by  sodering all the resistors again one by one  or replacing and moving far away from the board,they produce to much head

good luck