Silvertone Roundie on eBay

[Jeffhs]

Originally Posted by Eric H

Needs re-veneered

http://cgi.ebay.com/Round-tube-color...QQcmdZViewItem

Re-veneered? That's not the half of it, IMHO. This set needs a complete new cabinet. As it is, it looks like someone put a roundie chassis in a wood frame, open on all sides. Hardly the kind of set I'd want in my living room, even if it produced a decent picture. Heck, my RCA CTC185 with its charcoal-black cabinet, or any TV manufactured today (or, for that matter, in the days when sets were enclosed in wood cabinets), would look better than that roundie! Let's don't forget the heck of a shock hazard a set like this roundie poses either, with all HV points exposed (including the bell of the CRT). I'd look around for a cabinet from a junked roundie and put the chassis in there. Of course, if you wanted to keep the set in your repair shop or workshop, the wooden frame it's mounted in now would be OK.

Are you familiar with RCA's TRK-12? Those high-end sets were manufactured with nice wood cabinets, except for a few that were supplied with specially made clear lucite cabinets for demo at the 1939 World's Fair. Probably no one wealthy enough to pay $600.00 for a TV receiver in 1939 would have wanted one in a clear plastic cabinet on display in their living room. Today, they are extremely valuable collector's items.

[Tom_Ryan]

Well folks, Bob Meza was kind enough to let me have the TV, ...with the blessing of Charles, we loaded it into the back of my truck and she's now in my collection. It's an RCA built set made for Sears. It would be cool to put this inside an elegant Zenith porthole cabinet with doors. Does any one have a good spare cabinet waiting for a working roundie? No, no, here's a better idea..... perhaps I could mount the tube vertical into an early radio cabinet with a mirrored lid.... Gosh, this could be the making of a custom post-war TRK-21 prototype color set. That would look cool.

Tom

[kx250rider]

Hey; Why didn't I think of that?!

What a cool idea. Definitely go mirror-lid! But would you be able to get purity with the tube facing up, or would some magnetic engineering be needed?


Charles

[old_tv_nut]

IF the tube is sensitive to the vertical field component, it would be optimized for that component (geographic north pole to south pole) coming upward from the bottom of the tube towards the top, as it does in the northern hemisphere. So, if you mount it vertically, you will get the same polarity by putting the top of the tube to the south, I think. And maybe it won't be enough of an effect to be out of range of adjustment. Degaussing will be important, of course.

Originally Posted by Kaye-Halbert TV

Hey; Why didn't I think of that?!

What a cool idea. Definitely go mirror-lid! But would you be able to get purity with the tube facing up, or would some magnetic engineering be needed?


Charles

If you do go mirror-lid, you will need to reverse the leads to the yoke's horizontal windings. Otherwise, the picture will appear backwards reflected by the mirror. If you look directly at the screen of a working TRK-12 while standing in front of the cabinet, the picture appears upside-down. The vertical inversion is corrected by reflection from the mirror, and the horizontal reversal is corrected by the polarity of the yoke leads. Oh, those clever RCA engineers of the thirties!

[blue_lateral]

Tom-

Could you please post a picture of your volume knob? I have a set similar to yours that I am restoring, The knob is missing and I dont know what it looks like. It must have been a huge thing, but the shaft is only 1/8"!

Thanks,
John

[old_tv_nut]

Originally Posted by wvsaz

If you do go mirror-lid, you will need to reverse the leads to the yoke's horizontal windings. Otherwise, the picture will appear backwards reflected by the mirror. If you look directly at the screen of a working TRK-12 while standing in front of the cabinet, the picture appears upside-down. The vertical inversion is corrected by reflection from the mirror, and the horizontal reversal is corrected by the polarity of the yoke leads. Oh, those clever RCA engineers of the thirties!

On the other hand, if you rotate the tube and yoke to make the picture correct right-to-left, you will then need to reverse the vertical yoke leads.

[veg-o-matic]

I say you mount the chassis in an empty aquarium.

veg