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I'm trying to re solder the tip on my power adapter for a dv6000. Are the schematics showing where the lead attaches available online?

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There will be a diagram on the main body of the power supply

example:

http://www.viewpoints.com/images/review/2007/298/8/1193318891-42788_full.jpg

the mini diagram (top right), above the big GS logo..... next to 3.34A writing.

On this particular power supply the centre is + and the outer is -, u will need a multimeter to test for which is + and which is -

Posted on Oct 13, 2008

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Problem with HP 8510q laptop charging. Charging not working. Laptop working only that time when i have power in battery. Charging light not show. I try other charger but same problem. Is it inside some...


Inside? Yes. (If 'charger' is good)
Fuse?
No

Diagnostic flowchart:

A) AC adapter (Charger), has to be KNOWN to be good, before going on.
Used on a working laptop to see, or multimeter is used to check Voltage (DC)

The plug end that goes to the laptop, from the AC adapter, has a Center Hole, and a cylindrical outside metal shell.

The Function knob is set to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line.
If more than one DC Voltage scale, the Function knob is set to the 0-50 Volt DC scale.

The Positive (Red) probe lead of the multimeter goes to the Center Hole, and the Negative (Black) probe lead of the multimeter, goes to the cylindrical outside metal shell.

You should be reading 19 Volts DC.

Also have an assistant gently wiggle the cable FROM AC adapter TO laptop, and the power cable TO AC adapter.
If there is a fluctuation on the reading, there is a broken wire, or wires, in one of those cables.

B) Check the DC Power Jack.
This is the jack on the laptop (DC_IN) that the AC adapter plugs into.

Has a Center Pin, and an inner cylindrical metal shell.
Battery removed, use an eraser on the end of a No.2 pencil, and see if you can GENTLY wiggle the Center Pin around.

ANY perceptible movement of the CENTER PIN, means replacing the DC Power Jack,
(By the way, is it an 8510p, or 8510w?)

http://www.alldcjacks.com/en/ppj052-laptop-dc-power-jack.html

Any movement of the rest of the DC Power Jack (Body), means replacing it; or may just mean the solder joints are cracked, and can be re-soldered.

C) AC adapter and DC Power Jack checks out?
Problem may be with Power MOSFET's on the motherboard, and associated MLCC's.

(Multi-Layer Ceramic Capacitor, and they are SMD/SMT just like the Power MOSFET's.
Surface Mount Device/ Surface Mount Technology)

Using HP pavilion dv6000 series, and Pavilion dv9000 series Notebook PC's, for an example,

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

Or, it could be worse,

http://koti.kapsi.fi/jpa/stuff/pix/travelmate_6292/

Regards,
joecoolvette

Dec 23, 2012 | HP Compaq 8510p Notebook

1 Answer

Asus g60


Port is DC Power Jack.

AC adapter (Charger) plugs into it. (DC_IN)

Example of the DC Power Jack,

http://www.dcpowerjacks.net/catalog/index.php?main_page=product_info&cPath=3_20&products_id=1628

Looking at the view all the way to the left, the jack is upside down in relation to how it is actually mounted to the motherboard.
All 4 of those prongs go down into the motherboard, and are soldered to the motherboard.

The prongs on the sides formed out of the metal case, are for support.
The prong all the way to the back goes to the Center Pin, and is the Positive connection.

The prong (Pin) in the middle, goes to the inner cylindrical shell within the DC Power Jack, and is the Negative connection.
(Along with the two outside prongs used for support)

Battery removed use a No.2 pencil, and with the eraser see if you can gently move the Center Pin around.
ANY perceptible movement means a bad DC Power Jack, and replacement.

If it seems the entire DC Power Jack moves around, it may be damage to the jack, or the solder connections for the prongs to motherboard, are cracked.
Cracked solder joints just means use a little rosin flux, and rosin solder to re-solder those solder joints. (Solder connections )

DC Power Jack checks OK, normal diagnoses would lead you to the AC adapter. (Charger)

Center hole is the Positive ( + ) connection, and where the Positive (Red) probe lead of a multimeter goes.
The Negative (Black) probe lead touches the cylindrical outside metal shell of the AC adapter's plug.

(Multimeter set to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line.
If more than one DC Voltage scale, set the Function knob to the
0 - 50 Volt DC scale.

You should read 19 Volts (DC)
Have an assistant gently wiggle the cable from AC adapter to laptop, and power cord to AC adapter, as you check DC Voltage.
Any fluctuation in the reading means the cable, or power cord has broken wires.

http://www.amazon.com/G51jx-a1-G51jx-x1-G51vx-rx05-G60jx-rbbx05-G60vx-rbbx05/dp/B004CF4SEI


However due to your statements I'm willing to bet the problem is/are Power MOSFETS on the motherboard, and/or ceramic capacitors.

(Multi-Layer Ceramic Capacitors, and Surface Mount Device.
MLCC and SMD ceramic capacitors)

Information on the above using HP Pavilion dv6000 series, and Pavilion dv9000 series Notebook PC's, as an example,

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

Also go to the second photo down, that has the Alpha and Omega Semiconductor - AO4407 - Power MOSFET, circled in Yellow.

Below it, and to the right, are Ceramic Capacitors.
There is one above the one on the right, one above it, and one to the right of the top one.

Small rectangular shaped objects, with a dark wide band on the middle.

If visual signs of blackening, burning, or blistering, are shown on any of the Power MOSFETs, or ceramic capacitors, they need to be replaced.

Showing average cost of a Power MOSFET used a LOT in laptops, for this power application;

Fairchild Semiconductor International - FDS6679 - Power MOSFET,

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

$1.01 USD

MLCC ceramic capacitors used, are about 62 cents to 80 cents each.

Now price a replacement motherboard.

However, logic does sometimes dictate just replace the motherboard.
Why?
Because depending on electronic components that have failed, the damage could be further.

Or components may be weakened, and won't take long to fail after replacing failed ones.

Can you disassemble the laptop, and un-solder/solder the needed electronic components?
If so, and the repair fails down the road, just open it back up, and decide if a motherboard is logical.
(Price/availability)

IMHO (It's in my 'AOE', so that is what I would do)

1) http://www.youtube.com/watch?v=3NN7UGWYmBY

2) http://www.youtube.com/watch?v=5uiroWBkdFY

3) http://www.youtube.com/watch?v=f_yFDpSTfao

4) http://www.youtube.com/watch?v=MqivHi7Qjvk

For additional questions please post in a Comment.

Regards,
joecoolvette



Oct 16, 2012 | ASUS G60JXRBBX05 Intel i5430M 4 GB 500 GB...

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

1 Answer

Dv6000 power light does not come on any more


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

2) http://www.aosmd.com/res/news/news-article-1343753118301/AON6290_PR.pdf

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

4) http://www.dfsales.com/mark/displayresults2.asp?partnumber=AO4407

A) Of course check the output of the AC adapter (Charger), FIRST.
You're looking for 18.5 Volts (DC) at the output plug of the AC adapter.

[Center hole of plug is Positive. Outer cylindrical metal shell is the Negative connection ]

B) Next check the DC Power Jack. (The jack on the laptop where the AC adapter plugs into)

With the Battery removed, see if you can wiggle the center pin of the jack.

Any perceptible movement means a problem with the DC Power Jack.
Fortunately the DC Power Jack for this series of Notebook PC's, has a DC Power Jack Harness. The jack is mounted to a small removable circuit board, that has a wiring harness attached to it, and the harness plugs into the motherboard. No soldering required,

http://www.amazon.com/DDAT8APB3001108-DDAT8APB2002408-DV6000-V6000-power/dp/B004ETK3RS

AC adapter checks out, DC Power Jack checks out, check the two Power MOSFET's listed at the start of this solution.
[FDS6679 and AO4407]

MOSFET,

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

Power MOSFET,

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

Now let's talk. See how the FDS6679 and AO4407 use the D2PAK surface mount?

http://en.wikipedia.org/wiki/File:D2PAK.JPG

They use J-leads for connection. The J shaped flat leads that come out of the body of the P.MOSFET. In the above example there are two.
The left view shows a Top view, the right view shows a Bottom view.

Talk about easy to unsolder, and solder.
Just make sure when installing the new one/s you use a Clip Heatsink on each J-lead, as you solder each J-lead to the motherboard.

http://www.radioshack.com/product/index.jsp?productId=2103242

Use Desoldering Braid, (Solder Wick), to remove solder.
Desoldering Tool, (Solder S-ucker tool), is for the birds.

To conclude:

1) Bad AC adapter - You replace

2) Bad DC Power Jack Harness -

You replace?
FOUR DOLLARS AND FIFTY CENTS, plus shipping, and tax.

Shop?
$100 to $125

3) Bad Power MOSFET -

You replace?
Cost of .032 Rosin core solder, rosin flux, small flux brush, 25 Watt soldering iron with No.2 chisel tip, Desoldering Braid, and P.MOSFET/s.

It's One Dollar and 1 cent, for a FDS6679 from Mouser, plus shipping, and tax.

It's about $70 to $150 for a motherboard, depending on where you buy it.
And that isn't including the $125, or so for labor.

(Very few real techs left. Instead of diagnosing, and replacing those cheap P.MOSFET's, they would rather sell you a motherboard.
Easier for ***** in a repair shop with little to no skills, and also more coins, $$$$$$$)

That's my summer vacation, and now back to you David............

For additional questions please post in a Comment.
Regards,
joecoolvette

Aug 23, 2012 | HP Pavilion dv6000 Motherboard

2 Answers

Hey, I have a samsung R60 Plus laptop for a few years now, and its out of warrently and the DC jack power socket has just stopped working. I ordered in a new DC jack for the power socket and soldered out...


When the short happened it caused a feedback in the power supply charger, I would sub out the power supply with a replacement as a first important step to see if the laptop will come back online.

May 21, 2012 | Samsung Computers & Internet

2 Answers

I need schematic diagram for toshiba L6450 s4030 for power solution


Go to www.ebay.com Type: Make and model, refine search to mother board.

Apr 01, 2012 | Computers & Internet

1 Answer

Total Power Failure When Using the AC Adapter


1) Check the AC adapter. Use a multimeter set to DC Voltage, (Symbol is a dotted line over a solid line)

You aren't checking for voltage output, so much, as you are checking for an intermittent break.

AC adapter plugged into power, and probe leads of the multimeter touching the plug of the AC adapter going to the laptop, have an assistant gently wiggle;

1) First the power cord going to the AC adapter.
2) Then the cable from the AC adapter TO the laptop.

If you get an intermittent reading on the multimeter, you have a broken wire in the AC adapter cable, or power cord.

2) If the AC adapter shows VERY close, to the voltage it's supposed to be putting out, AND there is no intermittent break, go to the DC Power Jack.

[ A economical multimeter can be purchased for around $8 to $12.
Available in a multitude of stores. An auto parts store is but one example.

Analog, (Meter with needle), or digital is fine.

Multimeter's vary in style.
It will have a Function knob in the center. This is turned to DC Voltage.
As stated, if just a symbol, it is a dotted line over a solid line.
IF, there is more than one DC Voltage scale, set it to the 0 - 50 Volt scale.

The red probe lead is the Positive lead.
The black probe lead is the Negative probe lead.
You are testing DC Voltage. There is a Positive, and a Negative.

The plug of the AC adapter, that plugs into the DC Power Jack on the laptop, will have a Positive connection, and a Negative connection.

Plugs vary. The most common is a plug with a center hole, and a surrounding metal cylindrical shell.

The Center hole is Positive.
The outer cylindrical metal shell is Negative.

Need more advice post in a Comment ]

Depending on what laptop we are discussing here, the DC Power Jack can be soldered directly to the motherboard, OR it has a cable attached to it, and the cable plugs into the motherboard.
(DC Power Harness)

IF, it is the solder to the motherboard type, it has prongs, or pins, that come out of the bottom of the DC Power Jack, and goes through the motherboard. Then the prongs, or pins, are soldered to the motherboard.

With this style, if the DC Power Jack is bumped, the solder joints of those pins, may be cracked. Makes a bad contact.

Could also be bad enough to make a Short. (Laptop turns off when AC adapter is plugged in)

The DC Power Jack itself may be in bad repair.
Using as an example of the style that has a Center hole, and a surrounding cylindrical metal shell, (Inside), if the two parts touch, you can have a Short.

The diagnoses is to start with removing ALL power, AC adapter ('Natch), and Battery.
See with a small wooden object, if you can gently wiggle the DC Power Jack.

ANY perceptible movement means a bad DC Power Jack.
You will also have to partially disassemble the laptop, to check the DC Power Jack solder connections, to the motherboard.

3) DC Power Jack checks out, the problem has gone serious.

Mounted to the laptop motherboard is a power controller chipset.
It is a power MOSFET,

[ Chip and Chipset are slang terms for I.C.
Integrated Circuit,

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

The power MOSFET is a type of I.C.,

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

If you open the laptop, and view the motherboard, this problem will be readily apparent. This chipset usually burns, and turns blackish.

Problem is when it does, the manufacturer's ID numbers are hard to read, in order to obtain a replacement ]

This is one power controller chipset that 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

This is another one,

http://html.alldatasheet.com/html-pdf/85156/VISHAY/SI4925BDY/183/1/SI4925BDY.html

Both of these chipsets uses a D2PAK surface mount.
The leads are bent into a J shape. ( J Lead)

The 'foot' of the J lead is soldered to a copper pad on the motherboard.
(Copper Pad has a thin gold plating on it)

Simple de-soldering/soldering techniques, are used to Remove the chipset.
HOWEVER, use a Heatsink on EACH J lead, when soldering the new chipset in.

http://www.radioshack.com/product/index.jsp?productId=2103242

(The power MOSFET has transistor/s inside )

OR, replace the motherboard.

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 12, 2012 | Computers & Internet

2 Answers

Dell Inspiron B130 - can you replace the connection for the power source/battery charger? Mine is shorting out and not always charging the battery (new battery, new AC cord and adaptor).


Yes you can replace the power adaptor. You may also remove the solder from the existing adapter and re-solder it back on which is what I did. If you just want to replace it I suggest Ebay before I repaired mine I ordered a new one for $5 w/ free shipping.

Dec 29, 2009 | Dell Inspiron B130 Notebook

2 Answers

Hp pavilion dv6000


The only internal power for a laptop is the battery. The external power is the AC adapter. (Charger)
If you're asking for the schematics, for the circuitry and component layout of the motherboard, to my knowledge only HP trained authorized technicians, have access to this. In truth, if they have a problem, they just replace the entire motherboard. It's more cost and time effective.

Which leads me to this. The main issue of power problems for a laptop, is the DC Power Jack, right after a failing battery. This is the round port on a laptop, where the AC adapter plugs in. Although replacement of this jack, is no 'Walk in the park', it isn't that tough. However, there aren't that many of we tech's around, who do this anymore. There are just a bunch of 'Parts Changers' out there. Still, from a laptop manufacturers point of view, it may be more time and cost effective, to just replace the motherboard. Less chance of that laptop coming back for the same issue.

I state, that the DC Power Jack is the main source for laptop power failure, right after a failing laptop battery because, the jack receives a lot of accidental abuse. When the AC adapter is plugged in, and the plug of the adapter receives a heavy 'bump', the DC Power Jack can break, or it's solder connections can break, very easily.

This is an enlarged photo of an average DC Power Jack, http://us.st12.yimg.com/us.st.yimg.com/I/yhst-42877593004970_2046_1476209 You can see the 'body' of the jack, is not much larger than the plug that goes into it. The body is also made of plastic.
The thick pin in the center is the Positive connection. The outer metal shell inside, is the Negative connection.

Sometimes the plastic body can break. Sometimes the connection at the end of the center pin, can break. Sometimes the cylindrical metal outer shell, inside the body of the jack, can break.

There is also another issue. In the photo the DC Power Jack is upside down, in relation to how it sits on the motherboard. The flat metal pins that are sticking up, go down through holes in the motherboard, and are soldered to the motherboard, on the backside.
(The flat metal pin in the middle sticking up, goes to the center pin in the jack. One of the flat metal pins on the sides, goes to the metal shell inside the jack. The third flat metal pin on the side, is just soldered to the motherboard, and helps to give strength to hold the jack in place)
Sometimes these solder joints for those pins can be broken. They develop a crack in the solder joint.
In a case like this, just re-soldering the solder joint/s, puts the laptop back in business.

I posted all of this, in case this is the issue you are having.
The following is a link to a Maintenance and Service Guide, for the HP Pavilion dv6000. Don't let the name 'Guide' fool you. This is really an extensive Service Manual.
It tells you, and shows you how to disassemble the entire laptop down to just the bare motherboard in your hand. Also tells you and shows you how to remove and replace all the hardware components inside. It also has all the part numbers. It also has exploded illustrations of the entire laptop.

This is HP.com/Support>Manuals, and the page to download the manual I stated above,
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&lang=en&product=1842155&

Just go down to the blue ->
HP Pavilion dv6000 Notebook PC Maintenance and Service Guide <- , and click on it.
This is a PDF file you download. You have Adobe Reader on your computer. Adobe Reader uses PDF files.
After you copy and paste the link above into your address bar, press the Enter key.
For as much as 30 seconds, you may not see anything happening. The file is downloading, I assure you. The first page may pop-up after ten seconds. IF So, you should see a green Adobe download
bar below to the right. It will show the progress of the download. I suggest you let the file fully download, before you look through it. If you start looking through it before it is fully downloaded, you could break the download connection.

After it has fully downloaded, you can save it to your computer if you wish. This way you can have it to look at, anytime you want. You can also burn it to CD disk.
Just go up to the top headings, and click on the floppy disk icon. It is the second icon from the left.
Hovering your mouse cursor over it will briefly reveal, "Click to save this file to your computer or another location"

(IF you take the laptop apart, remove the battery and the AC adapter first. Also so I suggest using an ESD wrist strap. They are cheap, and help to insure that you relieve your body of Static electricity)

Apr 11, 2009 | HP Pavilion dv6000z Notebook

1 Answer

Dv6000 443775-001 power issue


At the risk of subjecting myself to your possible wrath, I suggest you replace the motherboard. I don't know your computer repair prowess, and am not doubting it for a minute, but I 'stand' here to tell you, that it's just not that simple.

The hardware components are installed down into a bare motherboard. The leads for the hardware components are in their 'raw' state, where they hang down past the motherboard. Then the motherboard is heated up using a hot air soldering method, and the solder flows over the leads making a precise, pretty little solder joint. This is done with robotics. Once this is accomplished, the extra length of lead is snipped off.
Some components are installed by hand. Very few of them. The operator uses a soldering station, and an instrument that magnifies the area by a great amount. Looks like a binocular microscope. One, two ,three, and the next motherboard comes up, and the same part, by the same operator is installed once more.

Again, not doubting your expertise in this area, but if you have use much heat, or linger too long, you stand the chance of making the copper circuit trace, lift right off of the motherboard, when you go to remove a component. Not enough heat, and you can't remove enough solder, nor get the lead to come out of the hole. (I use solder wick. Also known as Desoldering Braid. Solder ****** tools are for the bird's! (Desoldering Tool)

Same thing with soldering a new component in place. Too much heat or linger too long,....well you know what happens. Not enough heat, or staying in position long enough, plus using the right technique, you get a cold solder joint. It's a lot of fun, when you reassemble the laptop all the way, and find this! Guess what happens next? Yep! Do it all over again!

I'm not a saleman for Ebay, but I find a lot of my motherboards for laptops on there. I would also suggest looking at -> Laptops for Parts.

Apr 05, 2009 | HP Pavilion zd8000 Notebook

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