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#400054 - 7th Apr 2010 10:51pm Anyone use a Dell Laptop?
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10289
Loc: Birkenhead
I am wondering if anybody would let me use their Dell Laptop Power Supply for a few minutes. I need to find out if my Power Supply is faulty or not.

Dell power supplies (and compatibles) have a bit of circuitry in them that talks to the laptop, while to power the laptop you don't need this circuit to work but to charge the battery you do.

My power supply is powering the laptop ok but will not charge the battery. I need to find out if it is the power supply that is not talking to the laptop, or if its the laptop not talking to the power supply.

The easiest way to do this is to use a known good power supply and see if this will permit the laptop to charge its battery.

If you are willing, will you tell me the model number of the power supply so I can check it is compatible with my laptop.

ta
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#400056 - 7th Apr 2010 11:14pm Re: Anyone use a Dell Laptop? [Re: diggingdeeper]
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere
I have a toshiba P300 if that works?

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#400058 - 7th Apr 2010 11:25pm Re: Anyone use a Dell Laptop? [Re: diggingdeeper]
kimpri Offline

Forum Guardian

Registered: 29th Oct 2008
Posts: 3553
Loc: birkenhead
DD, Got this PC line 90w universal laptop power adapter, Compatible with dell,
AC input.100-240v 50/60Hz
Dc output 15/16/18/19/20/22v (4.0A) 24V (3.75A) (MAX 90W))

If you want to try it you know were i live.


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#400060 - 7th Apr 2010 11:43pm Re: Anyone use a Dell Laptop? [Re: kimpri]
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10289
Loc: Birkenhead
Thanks Kimpri but I don't think a universal power supply will charge the battery as it won't have the required active data line that is required.

Thanks to Wheels as well, but the same goes.

It needs to be either a Dell power supply, or a compatible that is known to charge Dell laptop batteries.


Edited by diggingdeeper (7th Apr 2010 11:46pm)
Edit Reason: Added wheels
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#400084 - 8th Apr 2010 3:20am Re: Anyone use a Dell Laptop? [Re: diggingdeeper]
TheDr Offline
Forum Master

Registered: 23rd Feb 2010
Posts: 2631
Loc: Wirral
Are you having problems again, just bring it into the shop and if we have one that fits can try it out for you.

The charging circuit does have an on-board fuse, and the battery has its own internal one as well, so we'll see if we have an old battery if you're getting power out of the charger in case that has gone.

If the laptop itself is showing a charging light that means that you are getting something out of the charger, just depends what.

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#400086 - 8th Apr 2010 5:04am Re: Anyone use a Dell Laptop? [Re: TheDr]
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10289
Loc: Birkenhead
Cheers Dr, brand new Battery and no charging light on the lap-top, though it does flash with an old duff battery present (whose internal fuse has probably gone).

Its just a matter of knowing which part has gone, there were some other issues with the power supply which I have sorted, but don't have any easy reliable way of testing the charger/laptop data link, the laptop's bios isn't acknowledging the data link, but it still could be either end at fault.

Don't know why Dell included the expense of the data link - they aren't renowned for putting i n surplus hardware.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#400185 - 8th Apr 2010 12:35pm Re: Anyone use a Dell Laptop? [Re: diggingdeeper]
ekky2000 Offline

Newbeee

Registered: 20th Jul 2009
Posts: 16
Loc: New Ferry
I don't know if this bit of info is of any use, but the last Dell laptop i had would run without having the battery installed, just with in charger plugged in

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#400235 - 8th Apr 2010 7:22pm Re: Anyone use a Dell Laptop? [Re: ekky2000]
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10289
Loc: Birkenhead
OK, many thanks again to TheDr who has helped me out yet again.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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