View Single Post
  #265  
Old 08-24-2022, 06:52 PM
Penthode's Avatar
Penthode Penthode is offline
VideoKarma Member
 
Join Date: Jun 2009
Location: Kitchener/Waterloo Ontario Canada
Posts: 1,462
On the older KRK2 tuner used in this set, there is a screw for each channel. But before you touch those, it is worthwhile to swap 6J6 tubes around. The inter-electrode capacitance difference between tubes may be sufficient to bring the tuning within range of the audio. Try exchanging the oscillator with the two othe 6J6s to check that out.

You do not have to worry about the front end RF tuning because the tuning is very broad. The oscillator is the critical one and you have to be within a few hundred kHz to hear anything.
Reply With Quote
Audiokarma