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Old 25th May 2020, 3:34 pm   #1
ljones0
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Default Name that TV power socket!

Hello all,

Not sure if anyone here can help at all but about a year ago I managed to pick up a small b/w portable TV (I am guessing it must have been made back in the late 70s) but have never been able to power it up due to it using some sort of weird power connector at the rear. From memory I think I read that the power connector was of some sort of type that was used in caravanning or camping but I really don't know at all. Can anyone name this connector? What would be its pinout?

The TV is a Hitachi I-89-311.

More info here with pictures but no ID on that connector!

ljones
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Old 25th May 2020, 4:00 pm   #2
slidertogrid
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Default Re: Name that TV power socket!

The set would have had two leads for that socket one for mains and one for 12v. this was fairly common at the time Indesit did a similar thing. it saved you having the lead you were not using rolled up on the set.
The Thorn 1590 series had a 12V plug in lead but the mains lead was permanently wired so when you were using the set on 12V you had the mains lead and 13A plug rolled up on the back.
These plug in leads were made by the respective manufacturers for the model concerned and it was always a problem when one was mis placed.
The only suggestion I can make is to identify which two connections are for mains and then hard wire a lead to the set. you may find there is a changeover switch on the socket which will need to be linked to enable mains operation.

Rich
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Old 25th May 2020, 4:54 pm   #3
Restoration73
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Default Re: Name that TV power socket!

Your set (also sold as Elizabethan brand) had two or three different leads
(car connector version probably had a zener or additional fuse) and the
mains lead may have had 3 cores with the earth connected to the TV chassis
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Old 25th May 2020, 5:20 pm   #4
newlite4
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Default Re: Name that TV power socket!

I have this same set. Checking the supplied mains lead, connect neutral to top right and live to bottom right. There is a link between top left to top middle.
Neil
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Old 25th May 2020, 5:32 pm   #5
usradcoll1
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Default Re: Name that TV power socket!

Quote:
Originally Posted by Restoration73 View Post
Your set (also sold as Elizabethan brand) had two or three different leads
(car connector version probably had a zener or additional fuse) and the
mains lead may have had 3 cores with the earth connected to the TV chassis
I have a Hitachi set with a similar mains lead, but for 120V US mains.
It was a good thing that the schematic was furnished, so you can fabricate a substitute for testing. It uses a jumper inside the plug, instead of a switching device.
Dave, USradcoll, as well as many other electronic items.
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Old 28th Jun 2020, 6:57 pm   #6
ljones0
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Default Re: Name that TV power socket!

Good news, well claws crossed. I tried powering up the TV and so far, so good. The picture is a little on the dim side however and the case needs a *major* clean. In the end I opted to use 12V rather than the mains best to avoid the mains if at all possible. Here's how I connected it;

Code:
 bottom of tv
    /\
    
*    +   *

*    *   -
The /\ is the little round notch on the connector towards the bottom of the TV. * = pin not used. Looking at the connector here from above with the top of the TV closest to me. To connect to the pins I (carefully) used a couple of small crocodile clips onto the TVs power connector.

12V DC @ 1A.

Many thanks for all the help!

ljones
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