05-11-2017, 10:07 PM
i just solved my Hum i had.
i started tinkering with all the IF transformer caps and noticed something.
each one of them was almost if not all the way bottomed out.
i was wondering why i was not hearing any real good usable sound until i rotate my vol knob about half way up.
I tuned to a station that came in really clear and then one IF at a time i payed attention to what my fine adjustment did to the signal then put it back where it was. I moved on to the next one and repeated. Then the final IF transformer i did the same.
I simply backed out the adjustment and payed attention to other stations and particularly wwv.
seems i have a ton of volume and i am getting more stations than before with the volume knob at a lower setting.
I have no idea what i just did but it sounds like progress for another piece of this project.
As a kid i remember the radio coming back home after being fixed and dad saying,, "this radio isnt playing right, that guy didnt do a good job". sometime soon after the radio broke and it sat as a decoration in the house till mom one day said to get it out of here. it went out into a little storage shed without any real climate control and that was i think around 1980. Who ever that was,, perhaps he was setting up for a alignment but forgot to finish it.
all the caps on the IF's were basically bottomed out.
once i fiddled around with the three of them backing off some,, like all in probably i have them backed off a half turn or so,, things are much better.,, well more like the difference of night and day.
i started tinkering with all the IF transformer caps and noticed something.
each one of them was almost if not all the way bottomed out.
i was wondering why i was not hearing any real good usable sound until i rotate my vol knob about half way up.
I tuned to a station that came in really clear and then one IF at a time i payed attention to what my fine adjustment did to the signal then put it back where it was. I moved on to the next one and repeated. Then the final IF transformer i did the same.
I simply backed out the adjustment and payed attention to other stations and particularly wwv.
seems i have a ton of volume and i am getting more stations than before with the volume knob at a lower setting.
I have no idea what i just did but it sounds like progress for another piece of this project.
As a kid i remember the radio coming back home after being fixed and dad saying,, "this radio isnt playing right, that guy didnt do a good job". sometime soon after the radio broke and it sat as a decoration in the house till mom one day said to get it out of here. it went out into a little storage shed without any real climate control and that was i think around 1980. Who ever that was,, perhaps he was setting up for a alignment but forgot to finish it.
all the caps on the IF's were basically bottomed out.
once i fiddled around with the three of them backing off some,, like all in probably i have them backed off a half turn or so,, things are much better.,, well more like the difference of night and day.