Question about Intel Motherboard

1 Answer

Did i kil the mobo?

Recently doing a dc jack repair on a dell laptop when i accidentally knocked a small rectangular shape black thing of the board, i think it was a small fuse (so i'm told) however i didn't realize until after i tried to power up the laptop and it never worked, i managed to find the fuse(assuming it is a fuse) and im wondering is it fixable or will i bin it and order a new one.
Any replies are appreciated
Thanks
James...

Posted by on

  • burnsj Dec 27, 2008

    Hi, thanks for the reply wiz but im wondering does anyone know if a laptop has been powered up without this small component does it kill it???

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If you are comfortable using a soldering iron and know exactly the part & place to fix you could try to replace, but if you are not confident doing this then a replacement board would be the best solution. Hope this helps & please remember to rate my answer.

Posted on Dec 27, 2008

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1 Answer

Computer cuts off in 6 seconds


Three things Bill;

1) Laptop has been overheating.
This is due to 'Gunk' that has built up in the cooling system. After turning off a few times due to overheating, the problem is locked in until repaired now, and BIOS won't turn the Processor on until fixed.

When a Processor overheats it turns off. (BIOS turns it off) This is a fail safe feature built-in, that keeps a Processor from burning up.

Solution is to partially disassemble the laptop, use a soft small brush, Q-tips, and a can of compressed air for computers to clean it.

Using compressed air from the outside only pushes the 'Gunk', further into the cooling system. Works sometimes, but ONLY on a temporary basis.
('Gunk' = Dirt, dust, hair, food crumbs, lint, ...you name it)

This is an example of a Thermal Module (Cooling assembly), for Gateway NV53 series of Notebook PC's,

http://www.ebay.com/itm/Gateway-NV52-NV53-Heatsink-Cooling-Fan-Assembly-60-4BX06-002-60-4BX07-002-/120817549354?pt=US_CPU_Fans_Heatsinks&hash=item1c2149802a

Look at the bottom view. See the odd shaped Aluminum metal plate to the left? Has a small rectangular copper plate mounted to it on the left side, and a small square plate mounted on the right side.

The rectangular copper metal plate sits on the Processor.
The square metal plate sits on the graphics chipset.

Heat is absorbed from the Processor, and graphics chipset, (G.P.U.), and absorbed by the curved copper Cooling Tube.
The Cooling Tube transfers the heat up to the rectangular finned Heatsink.

The Heatsink radiates the heat way with the thin fins.
Air flow from the black Fan Assembly, helps carry heat away from the fins of the Heatsink.

The fan blade area draws air up into the laptop from the bottom.
The rectangular finned Heatsink is on the -> Exhaust port side.
The fins of the Heatsink are what get clogged, and the fan's blades, center hub, and surrounding cage. (Shroud)

Example of how clogged with 'Gunk' it may be,

http://www.youtube.com/watch?v=AkAeE5I5E_A

Here you see it mounted to the bottom of the motherboard,

http://www.insidemylaptop.com/disassemble-gateway-nv-series-laptop-fix-power-jack/


Scroll down, look at the photo in Step 24.

Here are photos of the motherboard showing the bottom of the motherboard, and where the Processor, and graphics chipset are mounted,

http://www.ebay.com/itm/Gateway-NV53-Motherboard-/190741074260?pt=Motherboards&hash=item2c690dd154

The white rectangular socket with beveled corners, is the Processor socket. No Processor installed. Above the processor socket is the graphics chipset. Black square with green outline.
Looks like this sort of, but yours (NV5378u) is an AMD M880G graphics chipset.

http://en.wikipedia.org/wiki/File:6600GT_GPU.jpg

Yes. An ESD wrist strap should be worn, and it's alligator clip attached to a good ground source.

[ Average cost is $3 to $6. Electro Static Discharge.
Your body carries Static electricity.
Relieves your body of Static, so you do not Static shock your laptop. Static shock = Fry out the delicate hardware components.
Also, the Processor is the most susceptible hardware component to Static shock.

I connect to an unpainted surface, of the metal frame of an open, empty desktop computer case.
You can also set a large metal serving tray, (Unpainted), on the table you're working on, and connect to it.
Or a large metal knickknack (Unpainted) ]

1a) Thermal Paste:
Also after repeated overheating Bill, the Thermal Paste may dry up.
Thermal Paste goes in-between those metal plates on the Cooling Tube, and the top of the Processor, and top of the graphics chipset.

It is used to fill imperfections in the surface of the top of the Processor, and top of the graphics chipset, and bottom of the plates on the Cooling Tube.

(Imperfections; A magnified view would show 'Hills, Valleys, and Pitholes'.
Mating the two parts together, Processor/Cooling Tube metal plate, or graphics chipset/Cooling Tube metal plate; will create air pockets from those imperfections.
Air is an Insulator, not a Conductor. Thermal Paste is an excellent conductor of heat)

It is also used to transfer heat from the Processor, and graphics chipset, to those two small metal plates on the Cooling Tube.
After time, and repeated overheating, the Thermal Paste can dry up, and lose it's thermal conductivity.

The top of the Processor, and the top of the graphics chipset, plus the plates on the Cooling Tube, need to be scraped as best as you can, with a plastic scraping device. I use an old credit card.
(Should use the new ones too, lol! Credit cards, BAH!)

Then follow with Q-tips soaked in Isopropyl Alcohol. (Rubbing alcohol)
91 percent is best, but 70 percent will do.
(IMHO 50 percent = No. That is 50 percent WATER, and 50 percent Alcohol)

CAUTION!
Isopropyl Alcohol is EXTREMELY FLAMMABLE
Use in a WELL ventilated area with NO sparks or flames present!

Takes a LOT of alcohol soaked Q-tips, as it turns into a gooey mess.
The Cooling Tube plates, top of the Processor, and top of the graphics chipset, MUST be THOROUGHLY clean.
Literally clean enough to eat off of.

http://www.hardwaresecrets.com/article/274

3) Power Section:

Thermal Paste is fine, and laptop is clean inside?
Problem is the AC adapter, or DC Power Jack, or Power MOSFETs on the motherboard, or ceramic capacitors on the motherboard.

AC adapter:
Checked with multimeter's Function knob set to DC Voltage.
(If just a symbol the symbol is a dotted line over a solid line)

Positive (Red) probe lead goes to the Center Hole, of the plug end that plugs into the laptop.
Negative (Black) probe lead, touches the outside cylindrical metal shell of the plug.

You should read 19 Volts. (DC)
Also have an assistant gently wiggle the cable, from AC adapter TO laptop, and power cord TO AC adapter. (Charger)
If there is a fluctuation in the multimeter reading, you have broken wires.

DC Power Jack:
The DC Power Jack is the jack on the laptop, that the AC adapter plugs into. (DC_IN)

AC adapter removed, Battery removed, use the eraser on a No.2 pencil, and see if you can gently wiggle the Center Pin, of the DC Power Jack.
ANY perceptible movement of that center pin means replace the DC Power Jack.

The good thing is the DC Power Jack is attached to wires, that end in a plug.
It is actually called a DC Power Harness.
All you do is open the laptop up, (Switch Cover, Keyboard, and Palm Rest Cover removed), and unplug the DC Power Harness. Then plug a new one in, and reassemble the laptop,

http://www.amazon.com/Power-Jack-Cable-Harness-Gateway/dp/B005NX8N7G


Power MOSFETs/Ceramic Capacitors:

Power MOSFETs are used for;
A) Sense if the Battery needs a trickle charge, a full charge, or no charge at all.
B) Sense if the laptop is to run off of the Battery, or AC adapter.

Look at the Power MOSFETs used in the power section of the motherboard, and see if any are Blackened or Blistered.
Same with the Ceramic Capacitors near the Power MOSFETs.

More information, but using the HP Pavilion dv6000 series, and Pavilion 9000 series Notebook PC's, for an example,

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

Look at the second photo down, with the Alpha and Omega Semiconductor - AO4407 - Power MOSFET, circled in Yellow.
To the right is a rectangular shaped object with a wide dark band in the middle.
There is one above it, one above that one, and one to the right of the top one.

These are Ceramic Capacitors.
MLCC and SMD.
Multi-Layer Ceramic Capacitor, and Surface Mount Device.

Let's look at the average cost of a Fairchild Semiconductor - FDS6679 - Power MOSFET; and average cost of MLCC SMD ceramic capacitors,

Oct 20, 2012 | Gateway NV5378u Notebook

1 Answer

Charging light wont come on


A) AC adapter (Charger) is bad.
Use a multimeter, and check it out.

[ DC Voltage.
Test plug of cable that plugs into laptop.
Positive (Red) probe lead of multimeter, to Center Hole of plug on AC adapter.
Negative (Black) probe lead touches outside cylindrical metal shell.
You should read close to 19.5 Volts (DC) ]

AC adapter checks out OK?

B) DC Power Jack is bad

[The DC Power Jack is the port on the laptop, that the AC adapter plugs into. On laptop may be marked DC_IN ]

Damage to DC Power Jack prevents laptop from charging, or running strictly off of the AC adapter.

Battery removed take a No.2 pencil's eraser, and see if you can gently move the Center Pin, of the DC Power Jack.
ANY perceptible movement means replacement of the DC Power Jack.

The pin itself may not move, and the entire jack moves.
The good news is the DC Power Jack is not soldered to the motherboard.
It is soldered to a separate, therefore replaceable, small circuit board,

http://www.parts-people.com/index.php?action=item&id=3698

Click to enlarge. In the photo the DC Power Jack is at the back on the right.
This is is what the DC Power Jack, looks like not installed on that small circuit board,

http://www.elept.com/dc-power-jack-for-dell-inspiron-xps-m140-m1710-m1210-m2010_p2971.html

Looking at the view on the right, note the pins sticking out.
You are looking at the back view, and the jack is laying on it's side.
The pins go through the laptop's motherboard, and are soldered to the motherboard.

Where the pins are soldered to the motherboard is a solder connection. Commonly referred to as a Solder Joint.

Plugging in, and missing the hole of the jack, can cause the AC adapter plug to damage the DC Power Jack, by bumping into it.

Bumping into the plug of the AC adapter, while plugged into the DC Power jack, can cause damage to the jack.

Can cause cracking of the above mentioned solder joints. This leads to an intermittent contact, and eventually no contact, of the DC Power Jack TO the motherboard.

In this case the solder joints are just re-soldered.

Damage to the body of the jack itself means replacement of the DC Power Jack, or replacement of the USB/DC Power Jack circuit board, itself.

(Unless you, or an acquaintance can un-solder, and solder real well, the option may be to just replace the USB/DC Power Jack circuit board)

DC Power Jack proves to be OK?

Problem is one, or more Power MOSFETs on the motherboard.
These determine if the Battery needs a trickle charge, or a full charge, or no charge at all.
Also determines if the laptop is to just run off of the AC adapter, and not the Battery.

This example is for HP Pavilion dv6000 and Pavilion dv9000 series of Notebook PC's. You can use it for cross-reference information.
(Location of the Power MOSFETs on your laptop's motherboard. General idea of what they look like ),

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

What? Looks like motherboard replacement to you?
OK
Let's price a Fairchild Semiconductor International - FDS6679 - Power MOSFET,

http://www.mouser.com/Search/Refine.aspx?Keyword=FDS6679

If you buy one the cost is $1.01 USD

Look to see if the Power MOSFET/s are burned. Blackened, bubbled, or blistered.

There is one more small component, that if bad will produce the same results;
Ceramic Capacitors.

Look back at the Mayohardware blog. Look at the second photo down with the AO4407 Power MOSFET circled in Yellow.

Note the small rectangular shape to the immediate right, that has the wide dark band on it. There is one above it, one above that, and one to the right of the top one.

See if any of these, (No matter what the size. Look at all of them), are burned. Blackened, bubbled, or blistered.

http://www.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-b2cj?P=1z0wquyZ1z0t6fg

NOT stating these are ones to use. Just showing average cost.
.42 to .76 cents USD. Approximately a half dollar to three-quarters of a dollar.

Motherboard?

Average example,

http://www.amazon.com/Dell-Inspiron-M140-Motherboard-HC425/dp/B001155N0U


$200 USD

Average example of the -> package type of the Power MOSFETs used,

https://docs.google.com/viewer?a=v&q=cache:oER5NNz8cwcJ:www.fairchildsemi.com/ds/FD/FDS6675BZ.pdf+Fairchild+FDS6675BZ&hl=en&pid=bl&srcid=ADGEEShOhWPjm_M-ROHme4iEMrztCTOd-28jNiy1hVLQQh_VOyv8zcXEVDB_iTQA6MuZO88UmRkDgjyW9j4CP2aIJ-4DS-h6JNM3lvxldeApQeecmz_DADCw1s7tmNLxfPknqX14SZP6&sig=AHIEtbS_rYUAeo_8rB9YHkW05ZjLqeH4Jg


http://www.youtube.com/watch?v=5uiroWBkdFY&feature=fvwrel

You don't need a Soldering Station. A low Wattage soldering iron, and that tip.

http://support.dell.com/support/edocs/systems/xps140M/en/sm/index.htm

Regards,
joecoolvette

Oct 08, 2012 | Dell Inspiron XPS M140 Notebook

2 Answers

Engine will not start


Around this shop we diagnose, and not assume.

1) Test the AC adapter (Charger)
Test with a multimeter set to DC Voltage. You should read VERY close to 19 Volts. (DC)

While testing have an assistant gently wiggle the power cord TO the AC adapter, and the power cable coming FROM the AC adapter.
See if there is an intermittent reading for either one. Indicates a break in the wire/s.

2) AC adapter checks out OK go to the DC Power Jack. This jack is the port on the side of the laptop, that the AC adapter plugs into.
(DC IN)

Remove the Battery, see if you can gently wiggle the Center Pin. Use a non-metallic object, or tool.

Also check if the metal shell inside the DC Power Jack moves around.
ANY perceptible movement indicates a problem with the DC Power Jack.

Fortunately, for this model the DC Power Jack is a Power Jack Harness,

http://www.lapdiy.com/toshiba-satellite-l305s5941-power-jack-wire-port-dc-in-cable-p-7556.html

The jack portion is a squarish shape with a channel formed around it, and sits in a cutout formed in the outside edge, of the Lower Case.

The harness coming from the jack has a plug on the end.
You just unplug it, and plug a new one back in.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L305-L305D/big/remove-lcd-screen-replace-video-cable-09.jpg

In the photo above, it shows a Toshiba Satellite L305 series Notebook PC, partially disassembled.

On the right side you see the optical drive. Squarish shaped with one corner gone. Has a large white label on it, with a smaller yellow rectangular label.

To the upper right you can barely make out a Red wire. It is connected to the black DC Power Jack.

Looking straight across from it to the Left, you see the other end of the Red wire connected to a white plug.

That's the DC Power Harness, and where it plugs in.
This is the entire article,

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L305-L305D/remove-screen-replace-video-cable-2.htm

(Page 2, and 3 is listed at the top, and bottom of the page, in white.
Page1::Page2::Page3::Find another model )

Posted to show the DC Power Harness, and a pictorial guide that I feel will help get you started.

3) Power Button Board:
Has the Power On switch on it,

http://www.laptoppartsexpert.com/i-7600699-power-button-board.html

If the Power On switch is working, the laptop isn't going to turn on.
('Natch)

See the two wires coming from the board? Black and Red?
Red is the Positive wire, Black is the Negative wire.

Unplug the Power Button Board's plug to the motherboard. There are 2 pins. Carefully touch a small flat tipped screwdriver, (Jewelers is recommended), BRIEFLY to these 2 pins.

Laptop comes on you have a bad Power Button Board.

4) If none of the above is the problem you have a bad power sensor chip.
It's a Power MOSFET.

http://en.wikipedia.org/wiki/Power_MOSFET

Soldered to the motherboard, and takes skill to replace.

(It's a power transistor that is used in the circuit.
Need to use Heatsinks on the J type leads when replacing, and good skills for un-soldering/soldering.

But doesn't take a rocket scientist to replace it.
{ Sorry Gort }

This example is used in a LOT of laptops,

https://docs.google.com/viewer?a=v&q=cache:oER5NNz8cwcJ:www.fairchildsemi.com/ds/FD/FDS6675BZ.pdf+Fairchild+FDS6675BZ&hl=en&pid=bl&srcid=ADGEEShOhWPjm_M-ROHme4iEMrztCTOd-28jNiy1hVLQQh_VOyv8zcXEVDB_iTQA6MuZO88UmRkDgjyW9j4CP2aIJ-4DS-h6JNM3lvxldeApQeecmz_DADCw1s7tmNLxfPknqX14SZP6&sig=AHIEtbS_rYUAeo_8rB9YHkW05ZjLqeH4Jg
)

Or replace the motherboard.

For additional questions or comments, please post in a Comment.

Regards,
joecoolvette

(Link to free Service Manual to be included in a Comment )

Feb 05, 2012 | Toshiba Satellite L305-S5941 Laptop

2 Answers

The inside power plug for Toshiba laptop is broke. The estimated cost for replacing the plug is $300.


Or, for $399, you can go to Walmart and get a new Toshiba laptop.

The reason it costs so much is the labor involved. To repair this break, it literally requires a complete disassembly of the laptop, replacing and soldering on the connector, then reassembling the laptop. Laptops, unlike desktops, were not made for easy service, due to the fact that they're trying to pack 10 pounds of stuff in a 2 pound box, for lack of a better analogy.

It's a lot of work to fix it.

Jul 06, 2011 | Toshiba Computers & Internet

1 Answer

I have XPS M1530 DELL Laptop. DC JACK(power charging port has broken from mother with a very small piece of mother board)....I had tried to call customer care ..he told you should change the motherboard...


If this motherboard is a multi-layer motherboard then it is impossible to repair.
You can try to repair the motherboard by glueing the broken piece onto the motherboard with epoxy glue. Then identify the broken power circuit tracks between both parts of the circuit board, and then solder wires across these tracks or to the closest solder connections to re-establish the electrical connections on the motherboard.
If this does not fix the problem then most likely it is a multi-layer motherboard and you cannot bridge the internal connection inside the motherboard.

Jun 22, 2011 | Dell XPS M1530 Laptop

5 Answers

MY GATEWAY LAPTOP NO LONGER RECEIVES POWER.


Motherboard or harddrive? I'm betting it's more towards the motherboard. The DC Power Jack to be more specific. This is the port where the AC adapter, (Charger), plug is plugged into.

The DC Power Jack is not much bigger, than the plug for the AC adapter that plugs into it. There are small pin leads that are on the bottom of this jack, and they go through the motherboard, and are soldered to the motherboard.

Accidental bumping of the AC adapter plug, while plugged into the DC Power Jack, can damage the jack. It can break the connections for the adapter plug, and/or can crack the solder joints for those small pin leads.

[Laptops use DC electricity. A flashlight battery, and a laptop battery, are examples of stored DC electricity. DC electricity has two poles. Positive and Negative. The DC Power Jack has two connections. Positive and Negative. {Even if the DC Power Jack has multiple holes in it]

There is also another known problem associated with DC Power Jacks. It may stem from a bad motherboard design.

More to the point, the area where the DC Power Jack mounts on the motherboard. In this design, the DC Power Jack motherboard area, is almost a separate part of the motherboard. It's shaped like a Peninsula. (Think of an island, with one side connected to the mainland)

This peninsula shape, has the tendency to crack away from the main body of the motherboard. Circuit traces are broken.

When the AC adapter plug is setting in a certain position, it presses the two broken halves of the circuit traces together, for a momentary contact. As the AC adapter plug is moved from this position, the circuit trace halves are moved apart, and there is no contact.

(No distribution of electricity from one circuit trace half, to the other circuit trace half. Think of a circuit trace as a very, thin, flat copper wire. When a circuit trace is broken, there is essentially a wire that is broken into two parts)

Solution?
See if the DC Power Jack can be repaired, (Solder joint connections re-soldered), or replaced.
If the DC Power Jack motherboard area is the aforementioned peninsula shape, it may require replacement of the motherboard.

There are very FEW, computer repair shops that have the technical expertise to replace a DC Power Jack. Easy fix is to simply replace the motherboard. (More $$$$$ too)

However, some laptops DO require replacement of the motherboard for this repair.
Bad motherboard design, for the DC Power Jack area on the motherboard.

Re-solder DC Power Jack solder joints? (IF, this is the problem) Average is $50 to $75 (US)
Replace DC Power Jack? Average is $125 to $150. (US)
Replace motherboard? Depends on the Gateway model. Could be $225 to $400 (US)

[Yes, most of the time the cost warrants just replacing the laptop itself, as the cost of replacing, is close to the repair cost)

Just to SHOW you ab average DC Power Jack, and the repair involved of replacing. (Doesn't show you, that the entire laptop needs to be disassembled, down to the bare motherboard in hand)

This is NOT a recommendation to replace the DC Power Jack yourself! It is just for knowledge of what is partially involved. (You can accidentally burn the motherboard when desoldering, or soldering, rendering the motherboard useless)

http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

Sep 09, 2009 | Computers & Internet

2 Answers

My Acer 4001LCi Laptop Won't Charge and Overheats!!!


Hi there,

This seems to be a common problem with laptops is for the DC power jack solder connection to break. The initial symptoms are what you describe- having to manipulate the cord to make a an electrical connection. You may be able to see the jack move- it is not a part of the case- it is either soldered to the mobo or a seperate power board, possibly by wires soldered to the mobo.
Another possibility is the cord itself-four cords break internally with very little damage to the exterior- the breaks have always been right at the plug that goes into the laptop. A new plug can be bought for $ 2.00 US. DC power jacks seem to run around $ 6.00-$15.00. If you can remove the mobo youself, you can probably have the jack soldered on by a TV repair shop.

Regards,

Anirban Mazumdar
http://www.ikarmatech.com

Sep 08, 2009 | Acer TravelMate 4001LCi Notebook

1 Answer

Toshiba plug-in ac adapter LCDlight flashing and wont boot up


It may be that you need a new, (Or good condition used), motherboard. You may not.

The problem could be the DC Power Jack. The DC Power Jack is small, and the body is made of plastic. Sometimes there is a metal shell around the plastic body. (The jack is a rectangular shape, and is just a little larger, than the outside portion of that AC adapter plug!)

This is an example of a DC Power jack for a Toshiba Satellite a215-s5807,
http://www.notebookworks.net/ProductDetails.asp?ProductCode=NBW52-0133

As you know there is a metal pin in the center, and at the back of the round hole, there are flat metal contacts.

Let me explain the construction of a DC Power Jack, and how it's mounted to a motherboard. This all has relevance to the solution.

Your laptop uses DC electricity. (The AC adapter converts AC to DC. Your laptop battery, and a flashlight battery, are examples of stored DC electricity)

DC uses a Positive connection, and a Negative connection. The metal pin in the center is Positive. The flat metal strips at the back are Negative.

That laptop DC Power Jack has metal prongs, that come out of the plastic body. One prong, (Or pin), connects to the Positive metal round pin, in the center of the jack.
There may be one, or two prongs, (Or pins), that come out of the plastic body, and connect to the Negative side of the jack. (Flat metal strips)
These prongs go down through holes in the motherboard, and are soldered on.

With the AC adapter plugged in, an accidental bump on the plug itself, could break the body of the jack, or break solder joints that hold the jack to the motherboard.

AC adapter removed, and battery removed. Use a NON-metallic object, and see if you can make the center pin of the jack move. See if the entire jack itself seems to move.
A.If the center pin moves, you have a broken DC Power Jack.
B.If the entire jack moves, you have cracked solder joints. (Broken)

Replacement of the DC Power Jack for A.
Re-solder the solder joint/s for B.

Cost of replacing a jack at a reputable computer repair shop? $90 to $150
Cost of re-soldering solder joints? $50 to $90
Cost of replacing the motherboard?
$250 on up.

If you are a skilled person with the correct tools, it is feasible for you to replace the jack, or re-solder the solder joints.
It is also feasible that you yourself, could replace the motherboard.

Some laptops have a poor motherboard design, for where the DC Power Jack is mounted to the motherboard.

Crude explanation would be, that the main body of the motherboard is a 1 foot square. Then a 2 inch square comes out of the side of the main body.
The DC Power Jack is mounted to that 2 inch square. From accidental bumping, OR just normal usage of inserting, and removing the AC adapter plug, this 2 inch square can crack away from the main body.
This, of course would require a motherboard replacement.

Disassembly instructions for a Satellite A200 and A205 Series laptops. Very close to the A215 Series,
http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-1.htm

(Don't forget to buy, and use a cheap ESD wrist strap, to prevent static shock to the delicate hardware components, inside your laptop. Average cost is $7)

Aug 04, 2009 | Computers & Internet

6 Answers

The dc power jack will not accept power. I have to wiggleit to get the blue light to show that the laptop is charging. My computer is the acer aspire 5920-6423. I dont know how to remove the key board to...


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

Jun 22, 2009 | Acer Aspire 5920-6727 Notebook

1 Answer

Dell latitude c610


sounds like a mother board replacement,if theres a repair shop in your place,you can ask them if they can replace your DC jack..its hard to replace it since its soldered onto the board..mobo replacement is the fastest way..

Oct 20, 2008 | Dell Latitude C610 Notebook

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