Didn't mean to make this an "English Exam". I merely pointed out a possibility which seemed more likely with each of the OP's posts. Since I am the bad guy here, let me just set that title in stone and point out that the OP said he tried transistors from a known good radio in the original post,I have decided to go the mosfet route and bec done with it. The mosfets are now installed and the radio is booming.
I am noticing a lot of that here, people claiming to have tried things that later become obvious were never tried. Even if good BJT's were tried, something obviously took those out too. Since he never claimed to have found the cause of the repeated BJT failure, I can only wonder how the mosfets are doing so well....Transistors are not fake. I took them from a known good radio.
I don't know about the rest of you, but I don't care much for being lied to. And it always ends the same, miraculously fixed, drop the subject. This "English exam" turned into an honesty exam.