Dead stereo problem

Ok. This one is stumping me: I just replaced the stock alternator, serp. belt on a '95 Silverado; 5.7L; automatic; 4wd; and now the stock stereo doesn't work. I checked fuses and all are good. The on/off knob didn't work before, but now nothing does. The clock in it, on the other hand; works fine. Any suggestions guys?

Thanks in advance.

B.

Do you see a red light in one of the corners? You could of set off the security mode some how.

Didn't look, but I think I did just that. I'll have to get the code.

Once you get it working again you can disable the theftlock so that next time you disconnect the power your radio doesn't lock out.