Question about Dell Latitude C640 Notebook

1 Answer

AC Adaptor DELL PA-12 checking

How to check my dell AC adapter PA-12 on multimeter ??
'cause my Battery is not charging

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 807 Answers

See what the output voltage the adapter says, it may be 19.5VDC @ 3.34A.
Set the Multimeter to read 20 volts DC or more.
Put the Black lead on the outside of the plug (negative), and the Red lead inside the plug (positive).
They usually have the positive as the hole in the plug.
Look at the reading on the meter, if the power adapter is working it will read around about the stated voltage but none of them are completely accurate. It may be a little more or a little less.
If it is nowhere near the stated voltage then there is a problem with it.

Posted on Mar 13, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My battery is low and when I plug the power cord into the laptop the light that was on on the adapter turns off and my laptop will not turn on. I have a Dell Inspiron 6400


I'm assuming you are using a GENUINE Dell laptop charger designed for this model?

Check the end of the adaptor, if it is the type that has the centre pin, make sure it has not snapped off.
Check the adaptor is putting out 20 volts DC by connecting a multimeter to the outer and inner parts of the DC jack.

Usually, the ac adaptor LED will flash green if there is no charge going to the laptop ("spitting back power"), however, a dead adaptor is often recognised by a lack of the lED light glowing

You can try with a universal adaptor, it will not charge the battery but at least will eliminate the charger or the charging circuit. If this also fails to power up the laptop, then the issue lies with damage to the motherboard

Jan 21, 2011 | PC Laptops

6 Answers

Power problems


Have you tried a new battery?
Thanks,
Lee

Jun 19, 2008 | PC Laptops

Tip

My dell pa 12 won?t start ?


When i start my dell pa 12up and it takes 10 mins to load to windows XP, , when the windowsloading screen comes up the FANS go crazy. I then wait till i’m at thedesktop at which point i immediately shut down the pa 12(which takes afurther 7 mins) while the FANs are going crazy.

answer :

Now if i start the pa 12 again it works normally.

I had to do this procedure everyday, untill today when i switched the pa 12 on, waited till the desktop appaered and i removed the battery while the pa 12 was on..
17028ca.jpg
Now when i switch the pa 12 on it powers up but i’m not getting anything on the screen

First try a different AC adapter (such as :pa 10 ac adapter)

If no change then the issue is the motherboard. Often the AC adapter will fail then the battery discharges and you get the symptoms youdescribe.
SO AC adapter then MB

It shows no power on your laptop but it shows you the dvd player led comes on then off.

I would suggest try the following:

1. Remove laptop battery, optical drive, hard drive and ram. Remove external peripherals as well.

2. Make sure AC Adapter is not yet connected to the laptop. Pressand hold on the laptop’s power button for 10 seconds to drain the powerflea.

3. Connect the AC Adapter to a known good power outlet, check ACAdapter power LED if it is on. Try to sense if AC Adapter is not makinga bit of noise when it is plugin to the wall power outlet.

4. Connect now the AC Adapter (hp dv6000 ac adapter)tothe laptop. Check if AC Adapter LED stays on when it is connected tothe laptop. If the LED stays on means the AC Adapter is fine. If the ACAdapter LED turned off check the AC Adapter pin that goes to the laptopAC socket if it is loose.

5. If laptop AC Adapter stays on after connecting to the laptop try topower on laptop. If no power LED comes on then this is motherboardproblem.

6. Before replacing the motherboard there is one checking needs todo. If you can open your laptop bottom part then good, do this whenlaptop is not connected to any power source. Try to reseat the laptopCMOS battery then try to power on laptop after, if still fails thenreplace motherboard. I hope this helps.

on Feb 09, 2010 | PC Laptops

Tip

Battery won?t charge and AC adaptor not recognized


I have a Dell Inspiron 6000 that just turned two years old.

After one year, my dell 6-cell battery started to falter, so Ipurchased a new 9-cell battery. This worked fine until a couple ofmonths ago when I noticed that my 65W adaptor was frayed. I bought anew 65W Dell Inspiron 6000 ac adapter andit worked well for about a week until I noticed that my battery wasn’tcharging at times. If I was patient, or unplugged the adapter andplugged it back in, the battery began charging and all was saved.
dell-inspiron-6000-laptop-battery.jpg?w=200
This lasted only a short time until my Dell Inspiron 6000 batterywouldn’t charge at all for long periods of time, and sometimes thecomputer wouldn’t turn on, even if plugged into the wall. I thought itmight still be the adaptor, so I borrowed a fully functioning 90W Delladapter from a family member to test the system. This worked better,but still not great.

When I removed the battery and started only fromAC power, the functionality was also intermittent. Usually, if thecomputer actually started, I received the start-up error “The Inspiron 6000 AC AdapterType could not be determined, etc. etc. etc.” After pressing F1, thecomputer booted, but if the battery wasn’t in, the computer didn’tusually last long before shutting off. Unsure if maybe the battery wasthe problem, I put the 6-cell Inspiron 6000 batteryback in, and it too wouldn’t charge, although (together with the 90Wadapter) my computer would at least start more consistently if pluggedin. The error remained however, and sometimes the system stopsrecognizing power and switches to my ever dwindling battery power untilthe adapter is recognized again.
90-06009-010_replacement-dell-inspiron-6000.jpg
The problem is with the jack on the motherboard inside our Inspiron 6000’s. This is the jack you plug your power plug into on the back of the laptop.

Somehow the jack gets worn and does not make correct contact withthe laptop so the Laptop does not see the power supply as a legit Dellbrand. So the powersupply will not charge the laptop battery and run the laptop at the same time.

DC power jack repair guide. Do-it-yourself instructions.

Modern laptops are all sold with built-in wireless laptop ac adapter.Some power notebooks used by corporate road warriors will have powerfulcellular adapters that connect the laptop to the Internet via the cellphone infrastructure

A bad connection between DC-IN power jack on the system board and the system board is a very common problem with dell pa 12,dell e1505 and Dell Inspiron 6000notebooks. If your laptop is out of warranty, then you can fix theproblem by resoldering DC-IN jack on the system board. If it’s stillunder warranty, it would be fixed at no charge to you. Problem symptoms:
93-06070-002_replacement-dell-pa-12.jpg
  • Laptop randomly shuts down without any warning.
  • Power LED and battery charge LED start flickering when you wigglethe power cord or the AC adapter tip on the back or your laptop.
  • The battery will not get charged.
  • When you plug ac adapter for laptop, the laptop appears to be dead and there is no LED * activity at all (DC-IN jack on the system board is broken).
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack. dell pa 12 and Dell Inspiron 6000 disassembly guides will help you to remove the system board. Take a closer look at the power jack on the system laptop board witha magnifying glass. In most cases you get the power problem because ofa bad connection between the DC jack and the system board, you’ll see acrack between the DC jack connector and the system board.

on Jan 22, 2010 | PC Laptops

3 Answers

My dell D630 won't power up and the light from the ac adapter turned off whenever I plug it on the dc socket of the laptop. I tried unplugging it and then replugging it back to the outlet the light from...


Please remove the Battery and try to turn ON the Computer and try connecting to any other known power outlet. if the same issue persists, then the service may be required

Jun 24, 2010 | Dell Latitude D630 Notebook

2 Answers

Hi i am using dell latitude d600 problem with charging the battery 3 or 4 time orange light flash n 1 time green light . im unable to use my laptop with battery it working well with A.C power


Try to perform power drain. Take out the battery unplug the power adapter then press and hold the power button for 30secs. Put the battery back in then plugin in the power adapter then turn on the computer. If same issue occur, then you need to replace your battery.

May 18, 2010 | Dell Latitude D600 Notebook

1 Answer

Dell D610 only can run on battery, not accepting AC power or from my docking station. I check the PA-12 AC charger and is working fine with other D610. Please help.


If not powering from DOCK, AC adapter and only from battery, since the Battery, DOck and adapter are known good, it is a matter of a motherboard replacement

Jul 09, 2009 | Dell Latitude D600 Notebook

1 Answer

Can I use ther Targus Adaptor for Inspiron 1525


On the long term, a power adapter with a bigger amperage can damage battery and battery charger.

Better to get an adapter with same specs as the 65/70W one , or an original replacemant:

Dell Inspiron 1525 New AC Power Adapter Supply $14.29 - Buy.com Dell Inspiron 1525 65 Watt Original AC Adapter $25.00 - parts4nb.com Dell Inspiron 1525 Power Cord PA-12 $16.95 - AmeriMax Advance


DELL Inspiron 1525 DC Power Laptop Adapter ... £25.23 - B2C Shopping UK DELL Inspiron 1525 Laptop AC Adapter power adapter £38.99 - Very Good Battery Dell Inspiron 1525 Ac Adapter Charger Power ... £16.50 - eBay UK

AU/NZ - DELL INSPIRON 1505 E1405 E1505 AC Adapter Power Supply

Dell : Lind Electronics 70-Watt DC Power Adapter for Dell Inspiron

Apr 22, 2009 | Dell Inspiron 1501 Notebook

1 Answer

Power adaptor is not detected


Hi,
AC Adapter Error Message Occurs


Here is what you need!!! Click on the Above Link. Follow Each and Every Step. 

Hope This Helps!!!  Please Don't Forget to Rate my Response!!! Thanks!!! 
PREM

Mar 22, 2009 | Dell Inspiron E1405 Notebook

5 Answers

Not charging


Make sure you are using a 4.62A Power Supply (90watt) some of the knock-offs are only 65w (3.34 A). And you will never have enough current to charge the battery.

It will only run the laptop, but not charge.

The mobo sounds like it is good, if you had a power issue, you would have orange lights or blinking, and it would not come on at all with any power supply.

Mar 31, 2008 | Dell Inspiron E1505 Notebook

Not finding what you are looking for?
Dell Latitude C640 Notebook Logo

Related Topics:

127 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell PC Laptops Experts

Coss

Level 3 Expert

1039 Answers

Sudeep Chatterjee
Sudeep Chatterjee

Level 3 Expert

3267 Answers

Donna Sander

Level 2 Expert

193 Answers

Are you a Dell PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...