I do believe that several months ago I
was able to receive well on the 40m band after "wiggling" the
bandswitch knob
For this I would use Brian's idea of the "magic stick"
I some times use a nonconductive stick to lightly move the wafers
and look for
intermittents
It has worked wonders locating intermittent problems on many of my
receivers.
Good luck,
Gil
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