Stewart Warner model 9113 1950

[ohohyodafarted]

9104B in my collection has a record player in the bottom slide out drawer.
https://antiquetvguy.com/WebPages/Th...PhotoPage.html

[dtvmcdonald]

In the US we have the reverse 50-60 Hz problem. The good news of course is that
50 Hz transformers are even happier with 60Hz. The other problems are the same.

My Marconi 702 is normally fed 50 Hz signals. It took a bit of work with a couple of
extra small magnetic shields and a bit of rotation of the stepup 120-220 volt transformer,
but the only problem is a tiny bit of 10Hz flutter on one side of the picture. There are
no electrical problems. An external 60 Hz bucking coil of a few Gauss will fix entirely ,
but it has to be a few feet away to be uniform enough.

I can feed the set static pictures at 60 Hz from my HackRF SDR and the problem is gone.

[marcel]

Originally Posted by ohohyodafarted

9104B in my collection has a record player in the bottom slide out drawer.
https://antiquetvguy.com/WebPages/Th...PhotoPage.html

Nice a second one on the internet. The cover of the adjustments is not made of plastic but of metal, see photo. Is a television that you can hardly find.

Winconsin, I have a cousin living in Green Bay. I hope to visit there in the future. Received a key ring from my cousin when he was visiting the Netherlands.

[marcel]

Originally Posted by AlanInSitges

Looking great!

Question Marcel, are you running these USA-market sets on 50Hz power in NL? And if so are you feeding them with a 50Hz or 60Hz signal? I have a Predicta (and several other sets) that when I feed them a 60Hz NTSC signal the picture beats with the 50Hz power and is unwatchable. But if I feed a 50Hz signal the picture is stable but I'm not able to get correct geometry. All of your sets look good so I wonder how you're doing that.

I use 50 Hz power in the Netherlands. The videos also play at 50 Hz, which is fine. 50 Hz power with 60 Hz video playback goes wrong, image is not stable. Few problems with geometry, is important to replace the bad capacitors and tubes. You also have to keep in mind that those old TVs never have a perfect geometry. You often have a difference in cold to warm state after a few hours of playing. In many old service manuals it is written that a television must be adjusted after playing for half an hour.

[marcel]

The restoration is finished, now playing old music videos. See video on YouTube. https://www.youtube.com/watch?v=820IeyZkmnc