hi
As I had the same pb Iwrite again onthis.Sorry as nobody can give a real explanation and remedy!All I read here on this pb is of no help.BFO sorry has nothing to do with AVC MAN or AUTO.
I suspect the choke L46.I try another,but was to great and an BFO enter in auto-osc.
So I d to find the good one,that s difficult as chokes can hardly be mesured:
If I find the right I will tell it here.But why this pb occurs suddently???