05-20-2014, 09:26 PM
It sounds as if one of the RF stages may be going into oscillation at the point where you lose the signal. Do you hear any squeals or whistles as you tune stations with the volume control advanced?
You might try adding some .1 uf caps across the existing bypass cap cans and see if this has any effect.
You might try adding some .1 uf caps across the existing bypass cap cans and see if this has any effect.