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FT-817 DC Input Socket

Posted: Mon Feb 18, 2019 1:04 pm
by VK4OE
Greetings to all readers.

One of my FT-817 radios (used as IF transceivers for microwave bands) has developed a strange situation inside the DC input connector. I'm looking for helpful suggestions that may lead to a solution.

What has actually happened is that a 1.5mm thick annulus of plastic has snapped cleanly of the distal end of one of the DC input plugs that come with each radio, and this little 'ring' of plastic has been left behind inside the DC input socket, preventing proper seating and connection of any other plug in the input socket of this particular radio.

Has anyone had this happen before and discovered a way to remove the little ring of plastic from inside the socket? I have already tried using two sewing needles to encourage it to move outwards, approaching the problem from the outside, but without success. And the rear of the DC input socket is all 'closed off'. One idea I have had is that a 1 mm wide 'chisel' could possibly be used to cut what's there into pieces, but I don't have one..... And, of course, buying a replacement socket from one of the suppliers may be a solution as well.

Another 'solution' could be to only use the DC input plug that has had its end snapped off with the particular radio that now has the problem, but that's not practical in the situation where different FT-817s are used interchangeably.....

All suggestions will be gratefully received....

Cheers and 73,

--Doug Friend, VK4OE.

Re: FT-817 DC Input Socket

Posted: Mon Feb 18, 2019 1:38 pm
by ZL2WHO
Hi Doug.

I haven't encounted your issue but iv never been happy with the DC plug/socket arrangement, presumeably its the same on the 897.
The plug and socket have 2 pins neg and 2 pin pos but they dont mate tight so I suspect there is a volt drop across them under load.
Its been my intention to remove the socket from the back of the radio and bin it then replace it with a XT60 connector or the like.


Mark
ZL2WHO

Re: FT-817 DC Input Socket

Posted: Mon Feb 18, 2019 2:17 pm
by VK4OE
Thanks Mark for your suggestion - it is a passing concern for me as well, but I'm not about to fix things that "ain't broke yet"!

You and other readers may be interested in the fact that I have solved my problem already following a very helpful suggestion from Guy at "VK Radio Repairs", the Yaesu service specialist in this country.

With the top cover removed, and using a "third hand' bench vice, I simply set up the radio in a vertical state with the back panel at the bottom, in a way that I could see at the side of the back of the DC input socket the tiny movement of the ground connection when the other part of the broken plug (and it was an original Yaesu plug that broke!) was inserted.

It was then an easy matter of inserting a very small jeweller's screwdriver to hold back the moveable ground connection and, on removing the plug, the snapped-off bit of plastic just dropped out! Problem quickly solved with no damage at all.

When one has access to the experiences of others, life becomes so much more meaningful, doesn't it?!!

Cheers and 73,

--Doug Friend, VK4OE.

Re: FT-817 DC Input Socket

Posted: Fri Jun 14, 2019 9:12 am
by VK1DA
I know this is a late response to your question, Doug, but you might consider installing a powerpole adaptor permanently on your 817. I’ve done that and it looks like a solid connection that provides the powerpole socket needed, rather than the loose wire I once used. They have been offered by a seller on ebay but I don’t have the details to hand.

In one of my 817s I have installed the 3AH LIPO battery sourced from China, I find that lasts for a long time (at least 5 hours intermittent low power rx/tx) and makes the rear DC socket a backup that is rarely required for my typical use of the radio.

73 Andrew VK1DA/VK2UH


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Re: FT-817 DC Input Socket

Posted: Fri Jun 14, 2019 1:44 pm
by VK5ZD
I just use a small piece of sheet aluminium to hold my FT-817 connectors in place.
IMG_20190614_130819.jpg

Re: FT-817 DC Input Socket

Posted: Thu Jun 20, 2019 6:19 am
by VK1DA
Hi Ian,

Yes I’ve seen a few variations on the plug retainer idea. I couldn’t use that, as a previous owner of the radio lost the original dc cable with the right-angled plug. A standard plug it is even more likely to be pulled out. So the powerpole adaptor was a great solution.

Cheers
Andrew VK1DA/VK2UH


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