06-07-2019, 09:39 AM
OK, so the output xfmr is not on the speaker; this makes it a suspect.
I suggest then another way:
Do as you would during the alignment, putting the modulated signal through with your speaker connected.
First measure across the primary winding when supplying a good level of signal. Put the meter (use a DMM) om "AC Volts", so only to measure AC component and make sure you do have a good few (few tens maybe) of AC Volts of audio across the primary (Plate-to-Plate).
Then if you do (if you don't - you have other problems), move your meter to the secondary and see if you have the output. If you don't - you have a problem with the xfmr.
To confirm that, see if you have any good output transformer (you need a push-pull of course) and try to sub it.
PS: do you mean you have no Variac?
I suggest then another way:
Do as you would during the alignment, putting the modulated signal through with your speaker connected.
First measure across the primary winding when supplying a good level of signal. Put the meter (use a DMM) om "AC Volts", so only to measure AC component and make sure you do have a good few (few tens maybe) of AC Volts of audio across the primary (Plate-to-Plate).
Then if you do (if you don't - you have other problems), move your meter to the secondary and see if you have the output. If you don't - you have a problem with the xfmr.
To confirm that, see if you have any good output transformer (you need a push-pull of course) and try to sub it.
PS: do you mean you have no Variac?
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
