Some people just don't get it when it comes to understanding what is required to remotely analyze and fix a problem. This reminds of the way tube circuits were repaired.
1. Take all the tubes out
2. Put 'em on a tube tester
3. Replace the ones that were weak or bad
4. Try to put all the tubes back in the correct socket
We don't even know why the IRFZ44's were replaced in the first place, or weather they came from a working amp or not. For this thread to continue I think we need a great deal more information than has so far been provided. I'm done for the time being.
1. Take all the tubes out
2. Put 'em on a tube tester
3. Replace the ones that were weak or bad
4. Try to put all the tubes back in the correct socket
We don't even know why the IRFZ44's were replaced in the first place, or weather they came from a working amp or not. For this thread to continue I think we need a great deal more information than has so far been provided. I'm done for the time being.