All the fuses inside the little panel on the driver side are fine so where should I look now?
I'm assuming I'm going to have to tear apart the dash and get behind the stereo.

This happened after I got my tranny rebuilt, before then it was fine.

 

I just replaced the stock tape player AM/FM deck with a kenwood cheapo CD/AM/FM on my Blazer. I noticed on the new unit there is a fuse on the back just next to the plug in adapter as well as the one under the dash.

I have an 1991 Chev Blazer S10 Tahoe, 2door. You didn't specify if your radio was the stock unit or custom. Just throwin it out there for ya.

 

I'd check to see if the fuse is getting power. If it has power at the fuse your problem is between the fuse and the back of the stereo. If not, your problem is anywhere from the ign switch, to the fuseblock.

 

Yikes I'm gonna take it out and see if it's got the back fuse, it's a brand new jvc.
Thanks guys this narrows it down.