From: who where on
On Fri, 16 Apr 2010 12:48:27 -0500, "BillW50" <BillW50(a)aol.kom> wrote:

>My niece's Dell 610 laptop power adapter was chewed up by her dog. She
>asked me if I had a spare one she can borrow. Which means I'll never see
>it ever again. lol

A spare DOG?

>But if the center pin is positive, I have some generic ones that should
>work without modification (19v, 3.5A). So does anybody know for sure?

From: William R. Walsh on

> look more closely.  every dell unit i have ever seen has it marked
> on there.  though to see since the label is packed with so much
> regulatory information for compliance with just about every
> country...

Well, I finally turned it over again and had another look. Mine
definitely doesn't have a polarity marking on it. (It does have the
mess of regulatory text however!)

Thanks for the scan. I'm sure the OP found it helpful as well.

From: John Novicki on

"William R. Walsh" <newsgroups1(a)>
wrote in message news:Ar6dnaau3a6xeFXWnZ2dnUVZ_t-dnZ2d(a)
> Hi!
>> you don't have to believe me. you can have her scan or take a
>> picture of her adapter and email it to you...
> I just turned over a PA-10 and looked. There's no indication of the
> polarity
> printed on mine. There are three contacts, one outer ring, an inner ring
> and
> a center pin. One of these (don't know which one) will be for serial data
> transfer. Perhaps some units are labeled. I'd proceed with caution until
> it
> can be confirmed. (Dang. Where's my voltmeter?)
> If you use a supply that is suitable but does not have the serial data
> link,
> the machine will complain about this at POST time (and Quickset may notice
> later, if it's installed and running). The machine may also refuse to
> charge
> its battery.
> William
AFAIK, the center pin is the serial data link, and only know that from trial
and error. (The pin broke on one of mine, and while it still works, it
complains at POST and won't charge the battery as stated above. Using the
picture that Chris provided, I would assume this means the inner ring is
positive, and the outer ring is negative.

From: ps56k on
btw - my Latitude C-610 has 3 pins - but 3 tiny flat blades vs round
"pins" -

SO - you might check if it the laptop is - C version or the D version.

Our family has gone thru a couple of PA-6 power bricks for these Dell
When using on your lap - sitting in the family room -
as the line filter tends to bend the power cord down at the laptop connector
and over time - breaks the wires inside.
I've carefully soldered them and super glued them stiffer... for awhile.

BTW - I noticed that the 90w version power brick caused some switching
spikes on the TV,
but the 65w power brick didn't -
Must be the difference between switching vs brute force ferrous.

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