Sound and video not tuning together with digital converter: 1956 philco 21"

[Tubejunke]

OK folks; no need for rescue or searching for schematics (although I still wouldn't mind having one), the Philco proves once again to be mighty and in good working order! There should be a Guinness world record for consumer electronics logetivity! 57 YEARS!?!?!

Anyway, I took the one antenna terminal idea (and converter) to the Philco and tried various configurations. The one that works best is to simply leave one side of the coaxial adapter off. I did that and my sound would sync with the video. The picture still had a little snow (yes snow) in its digital display, so I touched one lead of the built in antenna to the dangling end of the coaxial adapter; better.

Then I touched the other side of the built in job and BAM, no snow with synced audio and video AND good volume level which I was battling with both sets! The only problem left was a faint wave oscillating across the screen. Still acceptable, but could be much better. I flipped the channels 3 and 4 selector on the digital converter to channel 4 and tuned the set to 4 and it all went away. I am pleasantly pleased to say the least.

I know someone will deduce that my whole problem was the simple move to another channel, but that's not the case. I had tried every possible configuration before I discovered this thing of leaving one side of the antenna input disconnected. As well when I had both leads connected and was coming up with the original problem and topic I had noticed that touching the built in antenna to the terminals improved the situation, but did not correct it.

Imagine the repair work attempts and hours of frustration that I would have gone through if I had blamed this on both sets as opposed to the peripherals! Live and learn, but it's fun when you get it the easy way..

Thanks to all for the input and ideas, and I hope that this will help others with similar problems with their vintage sets compatibility to modern equipment.