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View Full Version : replacement AC cord


09-19-00, 08:59 AM
I have a very old Sony portable color TV (old in relative terms, it was made perhaps in the late 70's and Sony no longer keeps parts or records). It works OK, but I need an AC cord. The cord looks like an electric razor cord, with a small, 2-pin receptacle, however it has a "keyway" molded in, and the pins in the plug are a smaller diameter that in an electric razor.
Anyone know of this type of cable, where I may get one. It would be alot easier than rewiring the set, and I'd kind of like to keep the unit in original condition.
Thanks


09-20-00, 05:14 AM
Good Morning, Stevea:

Those old Sony televisions were durable. No doubt about it. Cords? These are pretty much a standard. Check with Radio Shack or any electronics parts place. They usually run about $3 each.

Smokey

09-20-00, 06:10 AM
Thanks Smokey,
You sure seem to know alot about TV repair.
I'll be at Radio Shack in a little while. And I have another question for you about a different Sony Trinitron TV from the 70's. It needs repair, the CRT is good, but there's SEVERE pincushioning at the corners.
Old repair guys said it was in an internal circuit, gave me an old type transistor, but it had no effect. I thought the problem was in the deflection circuitry next to the yolk.
Is it worth trying to fix? The picture clarity (resolution) is probably not up to today's standards, and the set is not "cable ready". I'd really only use it as a monitor for videotapes, but it's big & bulky. I think I know the answer as to whether it's worth the trouble, but I HATE to throw out things that can be fixed.
Steve


09-20-00, 07:32 AM
Good Morning, Stevea:
Probably not worth the time or money to repair it. The problem is usually that there are some shorted windings in the deflection yoke. Another scenario is a bad filter capacitor. Either way, you're dealing with an antique and, unless it has historical value, you're better off spending your money on a new one.

For the record, I started working on these things back in 1963 when the color sets still had round picture tubes. I've seen the innards of a few of them. LOL

Smokey

09-20-00, 09:04 PM
Thanks again, Smokey.
Again I'll take your advice. I was leaning toward sending the set to its final resting place, and now I'll be comfortable doing it.
I went to Radio Shack and picked up what they call a "figure 8" power cord. It's close to what Sony used, but the receptacle pins are a bigger diameter and I'll somehow have to pinch them. I'll make it work.
Sony always has to have their parts just a little diffferent from the standard. I've heard Ford Motor Co. used to do the same thing. Even with a line cord, which couldn't possibly be a money maker or affect consumer purchase decisions, they insist on being proprietary. I guess its just a company philosophy.
It's taken many years to gain the knowledge you've acquired. Thank you for sharing your time and knowledge with me.
Regards,
Steve Aronson

09-21-00, 07:26 AM
Good Morning, Steve:

You can pinch the end on the line cord and make it a little smaller....or you can take your soldering iron and build up the male pins in the socket a little.

Smokey

09-23-00, 05:28 PM
Good Evening Smokey,
I did just what you said...pinched the end of the line cord, but in a vise. Of course I pinched it too much, so it didn't work and I had to start over.
What DID work was: I used crimp butt (splice) connectors, the kind used in car wiring. I crimped the line cord wires into one end, & carefully crimped the other end of the connector. I used a third connector to push up the little microswitch inside the socket, which allows AC, instead of DC, to power the unit, and after testing, but before making it permanent, I put a piece of shrink tubing around all three butt connectors, making something I could wedge in. Then I held this new line cord in with a cable clamp that I screwd into the back of the set. It makes a tight package, and I'll never lose that darn line cord.
Thanks again for your suggestions and advice.
Bye,
Steve