07-04-2018, 09:23 PM
I decided that I would not pull the RF unit a third time. So I decided to try a desperation move - and that was to replace some tubes and see what happened.
I tried two other 6A8G tubes. No change.
I then replaced the 6K7G RF amp tube with another 6K7G and...
SUCCESS!!!
Yup, the 6K7G RF amp was faulty. Apparently it would not start conducting until one of its internal elements reached a certain temperature and then the radio would suddenly "pop" on.
Now it comes on gradually as it should.
Whew! That turned out to be an easy fix! And I probably did not even need to pull the RF unit a second time.
So that's it. I will now put the chassis and speaker back in the cabinet and call this one finished.
I tried two other 6A8G tubes. No change.
I then replaced the 6K7G RF amp tube with another 6K7G and...
SUCCESS!!!
Yup, the 6K7G RF amp was faulty. Apparently it would not start conducting until one of its internal elements reached a certain temperature and then the radio would suddenly "pop" on.
Now it comes on gradually as it should.
Whew! That turned out to be an easy fix! And I probably did not even need to pull the RF unit a second time.
So that's it. I will now put the chassis and speaker back in the cabinet and call this one finished.
--
Ron Ramirez
Ferdinand IN
