15-11-2016, 03:02 PM
Have those three electrolytic capacitors been changed around the mixer stage?
I would check D1 next if that does not work.
It is a bit like a local/distant control on a 405 TV by the looks of it. It is biasing the IF amp transistor to get something like the effect of a variable MU pentode.
I would check D1 next if that does not work.
It is a bit like a local/distant control on a 405 TV by the looks of it. It is biasing the IF amp transistor to get something like the effect of a variable MU pentode.
