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» Film-Tech Forum ARCHIVE   » Community   » Film-Yak   » Antique Radio Restoration Help Needed! (Page 3)

 
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Author Topic: Antique Radio Restoration Help Needed!
Mark Gulbrandsen
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Posts: 16657
From: Music City
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- posted 08-01-2005 12:15 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Will,

Are these the cans with the big nut in the bottom to lock it to the chassis, or just the plain old FP type multi section caps that lock with tabs to the chassis? The nut type are very hard to find if thats the style you're lookin for. What you may have to do is install what ever caps and wire you can get ahold of and then over time aquire the exact parts as you find them or aquire another old chassis of the same model# to use for parts to restore the complete one you have. Alot of radios and TV's get restored this way and then sections that were temporary are re-done the correct way over time as original parts are located. You could also just get it going and sell it to get another thats in more complete shape. These things are not something that can necessarily be completed in a short time..... Its taken me almost 5 years to get the 621 chassis to the point that its at... and now for the case.... parts for 621's are hard to find but were also used in other model RCA post war chassis and thats how I got the correct parts for mine. The flyback tranny in my 721 died a couple of years after I had gotten it runing again but an Emerson set from the same time period and that came fomr a local yard sale also used the identical RCA tranny and thats where the replacement721 flyback came from. Other TV manufacturers like Emerson had to liscense things from RCA because of all the patents and they were obviously even supplied RCA parts in some cases.

Mark

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Will Kutler
Phenomenal Film Handler

Posts: 1506
From: Tucson, AZ, USA
Registered: Feb 2001

- posted 08-01-2005 01:18 AM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Hi Mark

Actually, I am not sure exactly what chassis caps were on the unit. RCA part numbers are listed in the Rider/RCA book.

But at least I can make something that has the simbalance of a correct look?

Cheers

K.

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Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
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- posted 08-01-2005 08:33 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
All old Motiograph amplifiers used the capacitors with the nut. Maybe you know where there are still 40-50 of these??

Louis

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Will Kutler
Phenomenal Film Handler

Posts: 1506
From: Tucson, AZ, USA
Registered: Feb 2001

- posted 08-04-2005 11:18 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Well,

I found the caps and a couple of other needed parts from a person with a parts radio.

Thanks Mark, for pointing me out to The Antique Radio Forum!!!!!!

There is a company on the east coast called RIWIRE (Rhode Island Wire). The specialize in reproducing wiring harnesses for antique/vintage vehicles.

RIWIRE gets their striped wire from a wire manufacturer, but unfortunately it is only low temp, low voltage automotive wire.

However, RIWIRE does have looming machines and reproduces the color coded cloth/lacquered braiding.

Only problem is that RI is only interested in automotive reproductions. Apparently they get quite a few inquiries regarding antique electronics and vintage airctraft. They are clearly NOT INTERESTED in expanding into these other fields.

But they will loom customer supplired wire at a minimum footage/cost.

Cheers

K.

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Mark Gulbrandsen
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Posts: 16657
From: Music City
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- posted 08-05-2005 03:04 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Clearly Will, there's not enough room in Rhode Island for them to expand into other buisness aspects !

Mark

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John Pytlak
Film God

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From: Rochester, NY 14650-1922
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- posted 08-05-2005 01:01 PM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
The Antique Wireless Association is located near Rochester, in Stafford NY:

http://www.antiquewireless.org

http://www.antiquewireless.org/museum/museum.htm

quote:
Our Museum is one of the few devoted to research, preservation and documentation of the history of wireless communications. There is a complete range of historical communications equipment on exhibit. Some of which, can be associated with famous people like Guglielmo Marconi, Lee De Forest, Edwin Armstrong, Thomas Edison and other famous pioneers. Members of the Antique Wireless AssociationTM, a world-wide group, have collected these exhibits from around the world - much of which are still in working order....The Museum is also a member of the American Association of Museums, and the Upstate History Alliance, which is affiliated with the New York State Education Department/Office of Cultural Education. The building pictured above is the home of the Antique Wireless Association, Radio Communication Museum and the Bloomfield, New York Historical Society. The building is one hundred and fifty years old and a celebrated landmark of the Finger Lakes Region.

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Mark Gulbrandsen
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From: Music City
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- posted 08-07-2005 08:38 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Jeff Stricker
I used to work with a guy from the Indianapolis area that was a big collector and restorer of vintage TV's. (his name was Jeff *something*) He had one with the vertical CRT and mirror in the sloping lid, also a color wheel (CBS system) TV.
Jeff, I don't know how I missed your post.... There are still quite a few of those mirrored TV's around but there were never many CBS color sets around. The Early Television Foundation in Hilliard, Ohio has the only operating CBS colorwheel set that I know of. One of the museum people actually built an NTSC to CBS standards converter to allow these setr to once more become operable. Link From what I gather the color on those was really good since it was additive like the Technicolor process was. MAny of the colorwheel sets were built from the RCA 630TS chassis that I posted in a previous picture. The 630 chassis was built like a tank and with minor mods could run CRT's as large as 30"!

Bruce, Best of luck rebuilding your RCA color set... They can be a real pain to do.

Mark

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Bruce McGee
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From: Asheville, NC USA... Nowhere in Particular.
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- posted 08-07-2005 09:54 AM      Profile for Bruce McGee   Email Bruce McGee   Send New Private Message       Edit/Delete Post 
Mark,

Thanks to the antique radio site that you mentioned here, I have in my hands: One brand new (1970) flyback tranny for my CTC-10C color TV chassis! I also bought 5 new electrolytics to replace the 2 multi-caps that are leaking. This might get rid of the slight hum bar problem that I have always had in the vertical section. Hope so, anyway. It's a beginning. The flyback that is in the set does not run hot, but it has dripped wax in the past in its previous chassis... used when I got it.

Will, Please post pics of your chassis when you get it together somewhat. I've never seen a radio that used 6L6 outputs.

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Will Kutler
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From: Tucson, AZ, USA
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- posted 08-07-2005 10:18 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Hi Bruce...

If you look at www.hallicraftercollector.com , Chuck Dachis has a color photo of the RCA 816K posted. Also posted is the original 1990 Antique Radio Classified article, including chassis pics.

But I will attempt to post pics of mine in the near future.

In the meantime, I have given up on trying to find striped wire. So, I guess I will go with 18 gage 600 volt 275 degree F solid colors and code the wire with 3M colored electrical tape.

Another "helpful hint" Anyone familiar with wiring harness used on 1960s Ford cars? Harnesses were wrapped with an adhesiveless electrical tape. This is available through National Parts Depot and is relatively inexpensive.

Bruce...when it comes to electrolytic cap restoration, look at that link Mark posted earlier.

Cheers

K.

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Will Kutler
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From: Tucson, AZ, USA
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- posted 08-09-2005 02:50 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Mark,

Do you have any info on Zentith color televisions from the mid-late 1960's? I'd like to find info on the set my parents had for years. I forgot the model number, but it was a very large screen with a dark wood cabinet that stood on four legs. Color, contrast and vertical hold adjustments were on the bottom of the screen. Tuner handle and volume were on the viewer right.

Cheers

K

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Will Kutler
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Posts: 1506
From: Tucson, AZ, USA
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- posted 12-07-2005 11:22 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Restoration on the 816K is commin along as I have time.

After cleaning the chassis with metal polish, Never Dull and the like, it seems that the original cadmium plating has been compromised as a little corrosion did start from my fingerprints.

So, I guess I'll completely disassemble the chassis and send it out for electroless nickel plating. Origional cadmium can still be done, but cadmium is a toxic material. It was originally used because of its excellent corrosion resistance and solderability. But electroless nickel is also an excellent barrier to corrosion and the electroless is solderable. But the plating shop offered to do a test piece to double check solderability. The electroless nickel, while not original, will look very nice, and provide an very durable coating that is very corrosion resistant.

Cheers

K

btw, Mark...you never did answer my question form my previous post [Confused]

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Louis Bornwasser
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From: prospect ky usa
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- posted 12-08-2005 07:05 AM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Will; don't worry about the solerability. Just buss all of the ground points together. Louis

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Will Kutler
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From: Tucson, AZ, USA
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- posted 12-08-2005 02:26 PM      Profile for Will Kutler   Email Will Kutler   Send New Private Message       Edit/Delete Post 
Thanks for the suggestion, Louis.

Your suggestion is not practical on the RCA 816K chassis. This is a restoration, and modifying the sheetmetal is not an option. I really don't want to nickel plate, but this is the best preservation option for this application.

K

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Mark Gulbrandsen
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From: Music City
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- posted 12-08-2005 09:46 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Will Kutler
Do you have any info on Zentith color televisions from the mid-late 1960's? I'd like to find info on the set my parents had for years. I forgot the model number, but it was a very large screen with a dark wood cabinet that stood on four legs. Color, contrast and vertical hold adjustments were on the bottom of the screen. Tuner handle and volume were on the viewer right.
Hi Will,
Sorry didn't see that question before. Am not that familiar with early Zenith stuff much. Started repairing Zenith sets when I worked at a local dealer back in 1968 when I was in high school. I am more familiar with those sets... I started back when Chromacolor and plug in replacement modules were just starting to appear. Sets were still hybrid back then too... solid state up to the horizontal output and high voltage section. Am more familiar with early RCA color sets than any other although its interesting to note that Westinghouse was the first manufacturer to actually market a color set back in the 50's.... They beat RCA by just a month or so even tough the CRT's in the Westinghouse sets came fomr RCA... as did everyone elses the first few years of color production. If you ever run into an color sets that are say from the first 5 years of color TV production latch onto them as they are quite valualable... especially the sets that have the 15GP22 CRT in them.... that was the forst production color crt built. Not may operable 15GP's survive today because they used a metal funnel bonded to a glass faceplate and neck. Most of them have slowly lost vacuum of the years but several do survive that still operate. There is a small group of people that have been on a several year trek to getting new glass neck parts made and then to rebuild some of those forst 15" color tubes. They are very close to sucess at this point in time....

Will, you might find this article on restoring a prewar Marconiphone 702 TV inspiring.....

Mark

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Phil Hill
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From: Hollywood, CA USA
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- posted 12-09-2005 12:00 AM      Profile for Phil Hill   Email Phil Hill       Edit/Delete Post 
quote: Will Kutler
Your suggestion is not practical on the RCA 816K chassis...
I agree, Will. I guess some people don't "get" what ***restoration*** means and is about.

It's a cool radio!

quote: Mark Gulbrandsen
...Am not that familiar with early Zenith stuff much. Started repairing Zenith sets when I worked at a local dealer back in 1968...
Blah Blah Blah.

Are any of these similiar to what your thinking of, Will?

-

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