Power plug not fitting

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  • Question
  • Updated 7 months ago
Got a strange issue. (The Flex 1500 is secondhand) It came with a 2.5mm power plug and lead to plug into my standard desktop power supply.
When i try and push the plug in it wont go in, I try it in another device that takes the same plug and it fits, when i try another little 12v power supply plug (has a small ridge around the plug) It fits but its a lower wattage. I ordered a new lead with plug it wont fit again, when you try and push it in its like the inner just wont push in.https://www.ebay.co.uk/itm/2-5mm-DC-Power-Bore-Plug-Power-Lead-10A-Crocodile-Clips-Inline-Car-Blade-Fuse/272663001514?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Here is the newest that wont work. 
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g4jnw

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Posted 7 months ago

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Bill -VA3WTB

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It sounds like the plug is not the right one for the inner pin.
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Rich McCabe

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I have a box of wall warts and there are 25 different types sizes that almost work in some applications.  I thought you just have the wrong one.  I would contact Flex sales to see what you need.

Rich
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George Molnar, KF2T, Elmer

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Second the comments above, and add a recommendation to use a light and magnifier to look into the 1500's DC socket. Make sure nothing is goobered up in there (yes, that IS a technical term). The pin could be bent, roughed up by current/heating, or the spring connection (ground side) could be bent.
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Bill -VA3WTB

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Goobered? have to remember that one George.
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Tim - W4TME, Customer Experience Manager

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You need a connector with a larger diameter center connector
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g4jnw

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The recommended one on the website is 
  • Mouser part number 502-760 
So maybe would be better off getting the recommended one, so long as they never changed their spec.
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Tim - W4TME, Customer Experience Manager

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The power plug to fit the connector on the 1500 is 5.5 by 2.5 mm.
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les norton

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Bought the Mouser plug and it fits perfectly, got in touch with the ebay seller who happens to be a radio ham shop and got an email back saying there are loads of different types but he was saying it was 2.5mm in the advert. lesson learned i guess although i can reuse the plug in my MFJ auto tuner so nothing lost. Admin can close  comments now please. Thanks Tim for your comments particularly.