Audio Systems: 1993 chevy chyenne pick up truck 1500 delco radio, delco radio, chevy 1500

Question
my 1993 chevy 1500 delco radio is locked o  the station 89.1 and at 1:00, it
powers on and off but none of the other buttons work and i got nothing at all
coming out of the speakers. I tried replacing the radio with then exact same
stock one and same thing, checked the fuse, and tried it with the a different but
exactly the same amp box and same problem. any solutions

Answer
ARE YOU SURE THAT YOU REPLACE THE RADIO ?

i don't believe that because your problem is the radio tuner ttl cmos is lock this happends, there is no way to repair and the only solutions is to replace the radio,.

unless you got a bad radio. 2 bad radios hard to believe

again did you replace the radio ?