Vintage 70's Zenith TV experts...
 

Hello, I have an old vintage 1970's Zenith SG2570P chromacolor TV, but the adapter broke off On the rear cable wire.
It was a female to female adapter, I think...
can you tell me what I need exactly here ?

heres some pics.
http://i47.tinypic.com/2581d9d.jpg
http://i49.tinypic.com/n3kxaf.jpg

simple fix.any electronics store will have what you need.if not,plenty of us in this forum can help.female end or you may use a standard end and a union that screws on.

Can you post a pic of the exact parts I need ?

What is the wire used for anyway ?
How do I hookup the VHF and UHF at the same time ?

The end of that wire had an end that would plug into that coax "socket". The easiest way to fix this would be to get one of these:
http://www.google.com/products/catal...=0CJIBEPMCMAA#
And then get one of these:
http://www.google.com/products/catal...=0CJMBEPMCMAA#

You put the coax end on the damaged wire and then you connect the two using the female-female adapter. You can get both parts at your nearest Radio Shack, not the cheapest place but if you don't have a "real" electronics distributor nearby it will be the best bet. If your antenna already has VHF & UHF combined then you put one end of the female-female adapter in the wire from the set and the other end in your antenna coax. If you have 2 antenna wires, one for each band, connect them to the screw terminals and plug the wire from the set into that coax connector on the left using the female-female adapter.

Was that clear enough? :)

Edit: basically, older sets used only the 300ohm screw terminals for antenna connections. Coax was better so set makers started giving an option. The coax coming out of the set is what runs to the tuner. The other stuff is just a built-in 300 ohm to 75 ohm adapter, same as you can buy in the store.

I still dont see how the twist on coax end will fit on the wire ?

What you need is an extension cable like this one:
http://www.ebay.com/itm/5M-15FT-F-Ty...item43abe0300f

Cut off the female end with the length of cable you need and solder it to the connection point inside the TV set, this would be the neatest looking solution.
Radio Shack may have a cable like this.

Alternately you can buy the crimp on ends from Radio Shack and a cheap pair of crimping pliers and fix the one you have.

Yep that will work..

Someone correct me from what I'm seeing, but any "F" type connector would require the use of cable with a solid core center. I don't recall at the moment what is at the tuner end but you may be in for some re-cabling unless maybe someone has a spare from a parts set. I don't have any of those in my parts stash either.....

Can one of you that have this vintage set verify?

bgadow had already recommended this part: http://www.google.com/products/catal...MAA#ps-sellers

Really seems like that part would work to me.

You have to remove the back of the set and see how the cable is connected to the tuner. IIRC, the coax on the tuner side is connected to an RCA type jack. The cable on the set now looks like it's aluminum, which is hard to work with.:sigh:

How do I go about finding an original wire though ?

Here is a pic of the cable I need if anyone has a spare !

(and a pic of the TV itself) :smoke:

Find a short low-loss video cable with an RCA plug on each end. R/S has adaptors that convert RCA to coaxial.:yes:

Will this do ?

http://www.cablesondemand.com/produc...RG59TFTFMF.htm

http://www.cablesondemand.com/images...RG59TFTFMF.jpg

No because that's an F-Connector.. Inside on the tuner it's an RCA jack.

These Atari cables may work for you just fine: http://www.ebay.com/itm/Atari-RF-Vid...#ht_510wt_1378

Includes an F-Adapter too, so then all you need left is this: http://www.google.com/products/catal...MAA#ps-sellers

Are you positive on this ?

I really should remove it to check !! :scratch2:

Those atari cables look thicker no ?

What is the cable inside the TV I have actually called ?

Yes, very sure.

My tuner is the same way: http://img.photobucket.com/albums/v3...n/IMG_0363.jpg

The atari cable is thicker, but it's better shielded than those thin RF ones..

I don't know what they are called, but from what I can see, that cable is wired directly to the tuner.. So if you get the cable and F-Adapter in that auction, and the other adapter that makes it a solid end, it can be wired directly to any regular 75 ohm device.. That plug on the TV, next to the twin lead terminals, is only merely a built in balun it appears.

You should be replying to this thread, not to PM's..

http://img.photobucket.com/albums/v3...n/hitachi3.jpg

Another TV, but yes, RCA jacks on the tuner.. Bottom right.

Hey gang, just an update...
Found another tuner cable to use instead of repairing the broken one. :)

http://i107.photobucket.com/albums/m...s/IMG_0568.jpg
http://i107.photobucket.com/albums/m...s/IMG_0567.jpg

The one above looks correct... Those are very common, and were used in various configurations right up through the 2000s in Sony sets. (The Sony late model ones were only 2" long, and were male RCA to female F).

Charles