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-   -   An NOS '49 Motorola 7VT2 TV (http://www.videokarma.org/showthread.php?t=272361)

decojoe67 12-12-2019 09:36 PM

An NOS '49 Motorola 7VT2 TV
 
4 Attachment(s)
I couldn't pass acquiring this one. It's practically new, both chassis and cabinet. It still has the inspection tag tied to the CRT socket and all the marking and stampings are like new. I came with it's original box and operating manual. I will have the chassis gone over by my friend and get it working once again.
One of the most appealing little early post-war TV's made.

EdKozk2 12-12-2019 10:26 PM

Nice set :yes:. The crt looks like it has the cadmium phosphor, original.
Ed

decojoe67 12-12-2019 10:32 PM

Quote:

Originally Posted by EdKozk2 (Post 3218796)
Nice set :yes:. The crt looks like it has the cadmium phosphor, original.
Ed

Thanks. Interesting about the CRT. It definitely looks original. Even the metal around it shines like new and the tape strip holding it on looks like it was just placed there.

DeLorean00 12-12-2019 11:31 PM

Quote:

Originally Posted by decojoe67 (Post 3218791)
I couldn't pass acquiring this one. It's practically new, both chassis and cabinet. It still has the inspection tag tied to the CRT socket and all the marking and stampings are like new. I came with it's original box and operating manual. I will have the chassis gone over by my friend and get it working once again.
One of the most appealing little early post-war TV's made.


Very very nice! Thanks for sharing.

decojoe67 12-13-2019 07:02 AM

Thank you guys. In case you're wondering, the last owner recapped the chassis, so the option to leave it factory original is out. It's okay with me because I like to play my sets. Right now it has issues, but will be gone over by my repairman soon.

electronjohn 12-13-2019 07:43 AM

Yow...a true time capsule!

Electronic M 12-13-2019 09:52 AM

That's pretty cool. Hopefully they restuffed the factory tubular paper caps...I sure would on a factory original like that if I planned to make it work.

bandersen 12-13-2019 11:03 AM

Amazing score! I'm glad it ended up in your hands :yes: It looks like the knobs don't have the white crud that so often plagues these sets.

Quote:

Originally Posted by EdKozk2 (Post 3218796)
Nice set :yes:. The crt looks like it has the cadmium phosphor, original.
Ed

I'm not sure what you mean ? Why would this TV have a different phosphor ? Doesn't every 7JP4 have the same type of P4 phosphor ?

decojoe67 12-13-2019 11:31 AM

Quote:

Originally Posted by bandersen (Post 3218828)
Amazing score! I'm glad it ended up in your hands :yes: It looks like the knobs don't have the white crud that so often plagues these sets.



I'm not sure what you mean ? Why would this TV have a different phosphor ? Doesn't every 7JP4 have the same type of P4 phosphor ?

Thanks Bob. It wasn't exactly a bargain, but I couldn't resist it. It glistens like new in and out.
Yeah, I too have never heard of a particular phosphor on a 7JP4.

Kevin Kuehn 12-13-2019 01:06 PM

As nice as that TV is I personally wouldn't consider calling it new old stock. Realistically anything found as NOS should have all the original components still under chassis, as well as all the original packing materials. Basically an unmolested and unopened item as shipped from the factory. Just my opinion of course. Otherwise a beautiful specimen. :scratch2:

Popester 12-13-2019 01:24 PM

Amazing! It’s as if it had come from a time capsule.

decojoe67 12-13-2019 01:42 PM

Quote:

Originally Posted by Kevin Kuehn (Post 3218838)
As nice as that TV is I personally wouldn't consider calling it new old stock. Realistically anything found as NOS should have all the original components still under chassis, as well as all the original packing materials. Basically an unmolested and unopened item as shipped from the factory. Just my opinion of course. Otherwise a beautiful specimen. :scratch2:

Technically yes, but when you look this set over, it's hard not to want to push it's description towards "NOS". I'm surprised the previous owner did elec work to it without at least re-stuffing the old caps, but in a way I'm glad I don't have to stress over "should I or shouldn't I"! If I was to leave it untouched I would just sell or trade it. I dislike static display sets.

EdKozk2 12-13-2019 05:27 PM

Quote:

Originally Posted by bandersen (Post 3218828)
Amazing score! I'm glad it ended up in your hands :yes: It looks like the knobs don't have the white crud that so often plagues these sets.



I'm not sure what you mean ? Why would this TV have a different phosphor ? Doesn't every 7JP4 have the same type of P4 phosphor ?

Hi Bob,
I recall reading in some old literature that the chemical elements for the P4 phosphor were changed in the 50's. The percentages of some the chemical elements were varied. The older crt's tend to look much yellower. I see this difference in many of the sets I have with original crts. The newer 7JP4 like I bought in 1974 looks more gray/white. I even noticed this on a 5BP4 I bought from the ETF a few years ago.
Ed

commodore 12-13-2019 05:55 PM

A true beauty, cherish it and go enjoy some great old shows :)

Electronic M 12-13-2019 05:56 PM

Quote:

Originally Posted by EdKozk2 (Post 3218853)
Hi Bob,
I recall reading in some old literature that the chemical elements for the P4 phosphor were changed in the 50's. The newer 7JP4 like I bought in 1974 looks more gray/white. I even noticed this on a 5BP4 I bought from the ETF a few years ago.
Ed

Every major manufacturer could (and some did) vary powered phosphor color... unpowered phosphor color can be as much a function of runtime as manufacturing process. If you have encountered a round tube that sat behind a square mask and was set up for minimal overscan there will be a browned center square and a blue outer ring.

EdKozk2 12-13-2019 09:03 PM

1 Attachment(s)
The wikipedia covers some of the P4 formulations, with and without cadmium or beryllium.

https://en.wikipedia.org/wiki/Phosphor

The table pictured is from a copy of U.A Sanabria's Television Course book published in 1948. The listing for P4 phosphors should use a plus sign instead of a minus.
Ed

decojoe67 12-21-2019 08:45 AM

1 Attachment(s)
The Motorola lives again! I had my friend go over the chassis. It had been professionally worked on, but with a minimalistic approach. Now it's been tweaked to be a reliable performer. The photo doesn't do the screen-shot justice. It plays like new. The audio is loud and crystal clear. Those Motorola TS-18 chassis are very good.

Polaraligned 12-22-2019 12:21 PM

That is a beautiful set Joe. Congratulations.

decojoe67 12-22-2019 01:19 PM

Quote:

Originally Posted by Polaraligned (Post 3219176)
That is a beautiful set Joe. Congratulations.

Thank you. It replaces a very nice one I regretting selling many years ago. I sweated it out having it shipped to me!

michaelz 12-23-2019 12:55 AM

a very nice looking set, I will not to replace original caps unless it doesn't work.

decojoe67 12-23-2019 05:17 AM

Quote:

Originally Posted by michaelz (Post 3219207)
a very nice looking set, I will not to replace original caps unless it doesn't work.

I agree. The previous owner who found the set had already worked on the chassis. My repairman replaced a few original caps that were okay, but bound to fail soon. It all depends on whether you want to use the set and enjoy it, or just have marginally "working".


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