2001Sentra radio not working

Car needed a jump and the person hooked the cables up wrong now radio doesn't work. I checked the fuses under the hood and the fuse box and they are fine. Please help

sometimes there is a fuse on the rear of the radio or in wire going to radio if its a aftermarket one. may also want to pull it out and check for power to radio plug. should have 2 wires with 12v with key on, if you have power supplys probably need to replace radio

sometimes there is a fuse on the rear of the radio or in wire going to radio if its a aftermarket one. may also want to pull it out and check for power to radio plug. should have 2 wires with 12v with key on, if you have power supplys probably need to replace radio Thank you will check out and let you know how I make out