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Ard jack which iss it

I have a problem with working out which is 12v and negative on motherboard of acer travelmate 220 when i got it there was no dc jack on the board can you please help

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If you can find a jack for that model then you can just see which hole on the board the center pin connects to. Positive is usually the biggest pin underneath in the center of the socket. The rest of the holes are usually
-ve / ground. Just paste this in Ebay search box.
acer travelmate 220 dc socket

Posted on Feb 15, 2012

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Compaq CQ1-1225 AIO Wont Start at all. Removed all components


Suggestions;

Anti-Static wrist strap connected to ground source, and your wrist;

1) The jack your AC adapter plugs into on the motherboard, is the DC Power Jack.
Motherboard out of case, power to motherboard, take your multimeter and see if you are getting 19 VDC at the DC Power Jack's positive solder joint, on motherboard.

The center pin of the jack is Positive. (The inner cylindrical shell is Negative)
Follow the DC Power Jack's positive pin from the Center of the jack, to the motherboard.

You probably won't be able to touch your meter's Positive (Red) probe, to the DC Power Jack's positive pin under the jack; so touch it's solder joint on the opposite side of the motherboard.
(DC Power Jack should be soldered close to the motherboard, is why)

Of course also touch the Negative lead, (Black probe), of your meter, to the Negative, (Ground) solder joint for the DC Power Jack.

Getting 19 volts DC?

See if there is a cracked solder joint, for any of the DC Power Jack's pin connections to the motherboard.
ANY perceptible movement of the DC Power Jack on the motherboard, indicates a bad power jack, and may indicate a broken/cracked solder joint.
Center pin of DC Power Jack is loose? Bad DC Power Jack. Replace.

2) DC Power Jack is determined to be in good repair? No cracked/broken solder joints?
The next components in the power circuit on the motherboard, leading From the power jack, are P. MOSFET's.
Power MOSFET.

Power MOSFET Wikipedia the free encyclopedia

More information using a prior solution,

Dv6000 power light does not come on any more

Check the links given.

3) The last thing that concerns me, although I probably should have listed it first; is the AC adapter you are using.
Concern is that it doesn't have the 'intelligent chipset' that matches the Compaq CQ1-1225 All-In-One desktop PC's circuitry.

AC Adapter For Compaq Presario All in One CQ1 1225 Desktop PC Charger...


Just my thoughts..........
Regards,
joecoolvette

Jan 15, 2015 | HP Computers & Internet

1 Answer

Acer 4320 can not switch on properly. after a few minutes turn on, suddenly black out.


The problem is most likely the DC jack in the laptop, causes are no power to intermittent operation, but if the screen blacks out it means the LCD display has issues especially if the rest of the laptop is working, could be a loose video cord from the screen to the motherboard has come loose.

Jun 10, 2012 | Acer TravelMate 4320 Notebook

2 Answers

No power at all, tried a new charger still no power and replaced the battery.


Hi

After the battery and AC cord replacement and still not getting power there's only once culprit there and that is the motherboard of the laptop. I recommend you call Acer and have them replace it for you. Thanks

Feb 21, 2011 | Acer Laptop DC Power Jack for Acer Aspire...

1 Answer

Acer travelmate 5520 will not switch on when powered by battery or ac


1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Sep 22, 2010 | Acer TravelMate 5520 Notebook

1 Answer

My comptuer was working it wont charge the battery or it wont work even when its plugged in


You most likely have a faulty DC Jack... The Laptop Will Need To Be Disassembled... The Faulty DC Jack Desoldered From The Motherboard, THe Motherboard Contact Pads Need To Be Retinned.. Then A New DC Jack ($6.00 on Ebay) Gets Soldered Into Place...

I would First Test Your AC Adapter... Use A MultiMeter To Do So... (they are sold at any Home Improvement Store For About $ 14)
Stick The Positive Test Prod In the Chargers Plug Tip.. And Touch The Negative Prod To THe Outside Of the Plug Tip, THen Test For Correct Voltage

Dec 04, 2009 | Acer Aspire 5100 Notebook

1 Answer

My 4520 Acer Laptop will not charge and will not work on AC power alone.......


You First need to test your AC Adapter Cord...
You can test if you have a secondary known working one.. plug that one in to see if same issue occurs.. OR you will need to test the AC Adapter using a multimeter (available at any home improvement store for under $7).. When testing the Plug End on the AC Adapter - Hold The Negative Test Prod Of the Multimeter to the Outer Side Of the Plug Tip, and Put The Positive(red) Test Prod Inside The Plug Tip... See If You Have Power Through The AC Adapter Tip... You Might Need To Slightly Wiggle The Cord Near The Tip End To See If THere Is A Short In The Cord....

If Cord Tests Good....

You Will Need To Replace The Laptops DC Jack...
The DC Jack is the port where your AC Adapter Plugs into on the laptop..

Your Faulty DC Jack Would Need to be desoldered, the motherboard cleaned of all old flux, Re-Tin The Contact Pads and then Resolder a New DC Jack Onto The Motherboard...

Nov 16, 2009 | Acer Aspire 4520-5582 Notebook

2 Answers

My travelmate3260 DC POWER JAck pin is pulled from


The power socket needs to be replaced, but it requires the laptop to be completely dismantled to get access to the power socket on the motherboard. I suggest you get a quote for this repair.

Sep 29, 2009 | Acer TravelMate 3260-4853 Notebook

1 Answer

Broken DC jack on Acer notebook


There is a site on the internet that gives a step by step on how to remove the covers and locate the broken part. Type in repair Acer. Also there are labs the will repair this most common problem...Is the jack broken or is the adapeter broken...

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you can get seperate dc jacks from here http://www.creativeit.tv/acer-laptop-dc-power-jack-repair.htm Try not to disconnect the screen as it may never come on again, i would take to a qualified repairer.

Aug 30, 2007 | Computers & Internet

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