[codefox1]

I would substitute a known good speaker/output transformer to rule them out or not.

Agree that miswired loops, open antenna coils can do same, but can be eliminated by working backwards from loudspeaker to antenna to isolate problem. Well, that's how I was taught all those decades ago.

Always try to post schematic or link if you can. Some of us old f**ts can nail it in 10 seconds. Not me, I take much longer.