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No power going into power jack

How do I get to the Power Jack in my ACER TravelMate 2700. It seems the pin connection to the mother board is loose and I want to re-solder it back.
Any sugestions on how to take the laptop appart to resolder the power pin?
Thanks
Daniel

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  • 1,102 Answers

You would be better off phoning small pc repair stores and getting the best price to replace it
not a good idea to fix it yourself
the cost usually runs between $60.00 - $100.00
I know people that fixed me themselves and believe me they have ended up with problems

Posted on Jan 13, 2009

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Hi there,

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10_9_2011_7_43_59_am.jpg

In order to get to the battery you would first have to dissasemble the laptop, remove the keyboard, power buttons, and the top of the machine. You may also have to remove the display if its holding the top of the cover in place.

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Sir.
Open your laptop in back pannal and Remove CMOS battery (in mother board) then shote the CMOS socket in ternal two connections.then insert cmos and set your lap

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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.
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The ac power plug was broken loose on my sony vaio vgn fw140e and finally the laptop failed to power up. I'm pretty sure the power adapter came loose from the mother board . I just don't know how to fix...


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.
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It's a little more involved than just removing the keyboard. You have to
Completely disassemble the laptop, until just the motherboard is in your
hand.

HOWEVER, for this Acer model it's a different installation, than the
normal one. This DC Power Jack uses a small wire harness. You just
unplug the old one, and install the new one. Let me explain,

I'm a tech who normally works on HP, Compaq, IBM, (Lenova now),
and Acer laptops. Acer's that are older than yours. All the DC Power
Jacks that I have replaced, are directly soldered to the motherboard,
and have no wire harness leading off of them. No plug connector on
the end of a harness, either.

In my search just now for a replacement power jack, my findings show
that the Acer Aspire 5920 series have a small wire harness.
Let me show you,
http://www.notebooksolutions.ca/zc/index.php?main_page=product_info&products_id=2977

Here the jack is offered minus the harness. You have to unsolder your old
harness from the defunct power jack, and solder it to the new one.
http://www.laptopjacks.com/view_part/Acer-Laptop-DC-Power-Jack-AC231916.html

You'll find the body of the DC jack is made of plastic. There is a metal
pin in the center. (This is the Positive post. + )
Some DC power jacks have a metal cylinder, or metal tube shape that surrounds the Positive metal center pin. This is the Negative connection.
Some just have a flat metal contact prong in the back for Negative.

If you have your AC adapter plugged in, and the plug is bumped, the metal
center pin can break loose from it's mount. Break loose from the plastic
body. Same thing for the metal 'shell' for the Negative connection, but this
doesn't happen as often.
Again, most DC Power Jacks have metal flat prongs that come out of the
power jack's body, go through the motherboard, and are soldered on the
backside. These solder connections can crack, and break, making an
intermittent connection. Doesn't seem to be the case for yours, IF the
jacks shown are the correct ones.

This may help you in your endeavor to disassemble your Acer Aspire.
(AND reassemble!) (TIP from me. DEFINITELY buy an ESD wrist strap
and connect the alligator clip to a good ground. They only cost about
$5 to $7 dollars. They are to relieve static from your body. Electro Static
Discharge wrist strap)
1.http://www.insidemylaptop.com/taking-apart-acer-aspire-5100-laptop/
2.http://repair4laptop.org/disassembly_acer.html

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Being only one month old this is probably a faulty pin or installation from the manufacturer so this should not be a problem for the place you got it from to replace.

If you do have problems I suggest contacting the manufacture immediately to see if they will replace it.

I hope this helped

Have a great day.

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1 Answer

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