Question about Dell Latitude C640 Notebook

1 Answer

C640 stopped powering up

Hi my c640 was fine then stopped powering up from the mains when I turn it on, the light on the supplie comes on when goes out, no lights show on the computer, I've also tried another power supplie which does the same thing! computer will not power upfrom battery.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 191 Answers

If it will not power on from battery or AC adapter, Either the power switch is bad - OR the motherboard is shot - OR the LCD is not working. I would suggest taking it to a local PC shop and having it diagnosed, usually this costs about $30 I work for TechSupportPros of Spokane, WA and charge $30 to diagnose computers.

Posted on Feb 05, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I own an emerson lf501em5f 50 inch tv believe the main board to be bad


according to what you tell me . already tried a new power supply . , then the problem is is the main board.

Nov 18, 2015 | Emerson Televison & Video

1 Answer

I have a Olevia lt37hvs, When i plug it in the blue(olevia)light comes on then goes off and the screen will be blue for 5-6 second then go black for 1-2 seconds then screen goes blue again and it just...


tried to connect again the supply for main board and disconnect the supply for the inverter board of back light. and turn on the tv, if the indicator stay the inventer board was the cause of voltage drop at the power supply board.

Sep 08, 2012 | Olevia LT37HVS 37 in. LCD HDTV

1 Answer

Dell latitude c640. turned on this morning and got the caps light to blink a few times and cd drive to power up then nothing. Just turned itslef off. Has been working fine until this.


several reasons why this will occur:

1) battery is not fully charged - you might try rebooting with the computer plugged into a wall socket.

2) computer's main power supply has been damaged and needs to be replaced.

3) virus - though with most standard virus' , you can still boot up, there are a nasty few that will wipe your entire computer including the operating system.

Mar 31, 2010 | Dell Latitude C640 Notebook

2 Answers

My daughters power supply for her C640 has a pinch


I suggest you DONT USE PINCH POWER CORD FOR SAFETY.

PLEASE TELL ME IS YOUR POWER CORD & THE PINCHED CORD ARE SAME? I MEAN SAME MODEL? AFTER PLUGING OF YOUR CORD, THE BATTERY CHARGING LIGHTS ITS ON? IF NO THEN I GUESS THAT CABLE NOT SUPPORT HER LAPTOP.
VISIT A DELL SERVICE CENTER OR A SHOWROOM AND BUY NEW CORD WHICH IS MADE FOR YOUR DAUGHTER LAPTOP MODEL.
OTHER WISE SOME CHANCES OF SHORTCIRCUIT ON MOTHERBOARD.

Thanks, i am waiting for your feed back & if you satisfied then thumps me please.

Jan 31, 2010 | Dell Latitude C640 Notebook

1 Answer

Red light flashing, no picture/sound!!!!


HI, this unit has 3 main fuse links on the main board that may be blown. the fuse links should be check before you move further into the diagnosis stage. once you have checked the fuses and they are still in a working state, this will confirm a power supply board failure. this board provides and regulates the current flow and distribution of it throughout the entire unit. If the fuses are fine and the power supply board is damaged, the green light will come on briefly then, the main control will notice that the power supply is not functioning properly. Once the main control board senses an abnormal current, it will shut down the TV rendering the red light warning. The list of fuses to check are below. Remember, if they are fine and working, the issue will be the power supply board itself and, it will need to be replaced.

FUSE CHECK LIST--

3A 12v- fuse----(242208600623)
SM 3A 125v-fuse----(242208600657)
500 MA-fuse-----(242208611092)

PART NUMBER FOR POWER SUPPLY BOARD

(996500036816)


Please rate and god bless:)


Apr 13, 2009 | Philips 42PF9631D 42 in. Plasma Television

3 Answers

Dell C640 won't power up


hi keith,
you have damaged the power slot on the laptop
sometimes it can be repaired by a service technician.
otherwise they may suggest you purchase a replacement motherboard

Sep 23, 2008 | Dell Latitude C640 Notebook

1 Answer

Dell latitude c640 laptop


This could be caused by a number of thing, bad battery, bad power supply, bad memory chip, bad processor, and a bad component on the motherboard. Start by checking the output of the power supply with an ohm meter. The output rating will be on the power supply or you can go by the input in the machine. Then try starting without the battery. Then remove the memory and try with one chip then the other. At this point, if the problem persists, you will need to take it for a professional diagnosis. They will be able to test the processor and motherboard to find the exact problem component, and tell you whether it's replaceable.

Jul 23, 2008 | Dell Latitude C640 Notebook

1 Answer

No power


check your power supply and make sure the proper power at the ends and the light is on the power supply, I no those C640 s have a problem with the darn plug in and the pins in the laptop may have got bend or broken check that out and if all the pins are not bent. your power supply may be bad check that out, if so you can go to Dellsupport.com and order one for fairly cheap. I think that will fix your problem.

Dec 21, 2007 | Dell Latitude C640 Notebook

3 Answers

Latitude C640 is dead!!


Hi,

I have the exact same issue. It's not the processor. If you have you power supply tested, you will probably find that it's not working anymore. The green light still comes on when plugged in, but it's not sending the "charge" to the notebook.

I have this issue with a couple of C640's. I've tested the machine by charging the battery in another (Pentium 3 Dell C600), then putting it back into the broken machine... woohoo it works.

Unfortunately I can't figure out why the power supply's keep on busting, I don't think that the power-supplies are faulty, or maybe they just get old, don't know, but the most obvious problem is probably something with the mainboard, which really sux.

Hope this helps,

Oct 09, 2007 | Dell Latitude C640 Notebook

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

199 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18402 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2017 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...