Question about Dell Inspiron 1000 Notebook

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Ao4407 I have the same common power problem with my laptop of not charging the battery. I found the AO4407 MOFET burned. Where can I buy one? Paul Almli

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  • Paul Almli May 11, 2008

    I have now found that ST crosses the mosfet to STS10PF30L.

    It can be purchased from Mouser Electronisc.

  • amaszing Jul 06, 2008

    I have a Inspiron 1000 with the same issue. What techinal experience is needed to replace the mofet? What is the cost of the part?  Is it cost effective to even attempt to replace it


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1 Answer

Just send a e_mail to the dell and order another one

Posted on May 10, 2008

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Charging circuit motherboard


That is the DC - DC circuit.
You will find it is the same circuitry that surrounds, where the DC Power Jack is soldered to on the motherboard; or where the DC Power Harness plugs into the motherboard.

[DC Power Jack attached to a small cable (Wires)
The cable ends in a male plug connector.
This now = DC Power Harness ]

This is an example of a DC to DC circuit on a laptop motherboard, and using the HP Pavilion dv6000 series, and Pavilion dv9000 series; of Notebook PC's.
It also shows the main electronic components that fail;
Power MOSFET's,

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

The Fairchild Semiconductor Industries - FDS6679 - Power MOSFET; and the Alpha & Omega Semiconductor LTD - AO4407 - Power MOSFET, is used.

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

Scroll down. Here we see the FDS6679 is Obsolete.
Let's take a look at the cross-reference example given,

http://www.mouser.com/ProductDetail/Fairchild-Semiconductor/FDS6679AZ/?qs=sGAEpiMZZMshyDBzk1%2fWi1qxDdW%2fXBi2qgMuZEfLVO4%3d

One dollar and one penny - USD

Now for the AO4407,

http://www.mouser.com/Search/Refine.aspx?Keyword=AO4407

Using the first cross-reference example given,

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d

78 cents - USD

These are SMD/SMT.
Surface Mount Device/Surface Mount Technology,


Now I would like you to take a look at another electronic component that may fail. The MLCC's.
Multi-Layer Ceramic Capacitor.
They are also SMD/SMT.

Look at the second photo down on the Playtool link.
Shows the AO4407 circled in Yellow.
(You can click on the photo to enlarge)

See the small rectangular object to the immediate right, of the AO4407? Has a dark wide band in the middle of it.

There is one above it, one above that one at the Top; one to the right of the top one, and one to the right of it.
(Last one is mounted Horizontally. The others are mounted Vertically)

There are also 4 more smaller versions, at the Bottom/Left corner; of the AO4407.
These are MLCC's.

Here is an example close up. I'm going to use a 4.7uF (Microfarad), 16 Volt example,

http://www.mouser.com/ProductDetail/TDK/C3216X8R1C475K-EPOXY/?qs=sGAEpiMZZMvQvaS66kI3ThUn76Ya%2fK0ChCft2vaMHwo%3d

Regards,
joecoolvette

May 06, 2013 | Dell LATITUDE PC Laptops

2 Answers

Code spice


chang the battery or check mother board

Apr 23, 2013 | PC Laptops

1 Answer

X60 charging circuit


AC adapter (Charger) converts the high AC electricity, from your home, or business; into a low DC Voltage.

The DC Voltage goes into the laptop via the DC Power Jack (DC_IN), on the laptop.

The DC Power Jack is connected to the DC to DC Voltage circuit, on the motherboard.
The charging circuit is part of it.

If you are having problems with the DC - DC Voltage circuit, take a look at the Power MOSFET's on the motherboard, in the DC - DC Voltage circuit.
Also the MLCC's that are close to them.

!O_O!

This circuit area is on the motherboard, immediately close to the female connector; the DC Power Harness plugs into.

http://www.ebay.com/itm/IBM-Thinkpad-X60-Intel-Motherboard-Case-Bottom-Fan-42T0029-Type-17097HU-Tested-/360586854935?pt=Motherboards&hash=item53f4a6c217

Put your mouse cursor on the middle of the photo, to use the Zoom In feature.
The Yellow rectangular jack in the upper right corner of the photo, is the DC Power Harness.

Note where it plugs into on the motherboard.

{The DC Power Jack is attached to wires, and they end in a plug connector. It is now a DC Power Harness}

Look on the Top of the motherboard, where the DC Power Harness plugs in, and the Bottom of the motherboard in that same area.

See if there are any burnt Power MOSFET's, and MLCC's.

Using the HP Pavilion dv6000 series, and Pavilion dv9000 series; to detail problems with Power MOSFET's for these series, and give you more insight on your IBM laptop,

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

Here you see the Fairchild Semiconductor Industries - FDS6679 - Power MOSFET, and the Alpha & Omega LTD - AO4407 - Power MOSFET.

Looking down at the second photo, which shows the AO4407 circled in Yellow; note the small rectangular object to the immediate Right, that has a wide dark band on it.

There is one above it, one above that one at the Top; one to the right of the top one; and one to the right of it.
There is also one of the same size under the AO4407, and smaller examples to the Bottom/Left of the AO4407.

These are MLCC's.
Multi-Layer Ceramic Capacitor.
They, like the Power MOSFET's, are SMD/SMT.
Surface Mount Device/Surface Mount Technology.

Using the FDS6679, and AO4407 for examples of attainability, and price,

FDS6679,

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

Here we see the FDS6679 is Obsolete. Using the cross reference example, FDS6679AZ;

http://www.mouser.com/ProductDetail/Fairchild-Semiconductor/FDS6679AZ/?qs=sGAEpiMZZMshyDBzk1%2fWi1qxDdW%2fXBi2qgMuZEfLVO4%3d

$1.01 USD
(Note the 8 J-leads. 4 on each side)

AO4407,

http://www.mouser.com/Search/Refine.aspx?Keyword=AO4407

Obsolete also.

Using the top cross reference example, DMP3020LSS-13;

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d

78 Cents USD.
(Note the J-leads)

Using a 4.7uF, 16 Volt MLCC example, to show you what they look like, a little better;

http://www.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-b2cj?P=1z0wrjcZ1z0x565

(Scroll down a little)

All this is of course, after you have checked the AC adapter (Charger), for the correct output voltage, and had an assistant gently wiggle the power cord; and cable from AC adapter TO laptop.
[Fluctuation on multimeter reading, indicates a broken wire in cable]

Also after the DC Power Harness has been checked for continuity.

Of course I don't know why I am even stating this, because you are now diagnosing the DC - DC power circuit.

Direct link to ThinkPad X60 series of Notebook PC - Service Manual,

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/42x3550_04.pdf

(If the above direct link does not work, please state in a Comment.
I will come back with THE Lenovo Support page to download it from)

What manufacturer of ESD wrist strap are you using, and what is your ground source?
Just curious.

Post back in a Comment.
Regards,
joecoolvette

Mar 04, 2013 | IBM ThinkPad PC Laptops

2 Answers

VPCF13CGX battery issue


It may hardware problem the connector in between the battery and laptop may damaged

Jan 25, 2013 | Sony VAIO I7 1.73G 4GB - VPCF13CGX/B -...

2 Answers

I have a Toshiba Satellite a205-s5000 that I replaced the power jack in. They sent me the wrong plug, mine was hard wired into the board so I cut and spliced the new plug to the wires coming out of th


Looking up the DC Power jack for this model, shows me a Center Pin, and cylindrical metal shell; inside the jack.
Center pin is Positive, cylindrical metal shell is Negative.

Also shows it to be a DC Power Harness. Wires connected to the jack, and end in a white plug; that plugs into the motherboard,

http://www.laptopjacks.com/view_part/Toshiba-Laptop-DC-Power-Jack-TS462625.html

http://www.youtube.com/watch?v=lLPlSsEx5F4

Granted, the above is a A205-S4000 series.
(A205-S4577)

http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-3.htm

http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/big/toshiba-satellite-a200-a205-17.jpg

So...................
1) Am I to assume someone broke the female connector on the motherboard, that the DC Power Harness used to plug into?

Hard wired in this statement would reflect there was a DC Power Harness, soldered directly to the motherboard?

2) Or is your statement that the DC Power Jack itself, for your model; is soldered directly to the motherboard; and you hard wired the new jack in place; after cutting the plug off of the end of the new DC Power Harness? (And removing defunct DC Power Jack)

Plus; Is this an A205-s5000, or one of the A205-s5000 model series?
A205-s5800, A205-s5801, A205-s5803, A205-S5843, etc.

Yes.

Trying to figure out why this A205, has a DC Power Jack soldered directly to the motherboard, and is not using a DC Power Harness.

Why?

Have to make sure you are soldering to the right area, yet alone the correct contact points.

Don't know what I'm talking about? You unsoldered the DC Power Jack FROM the motherboard? Or the jack was soldered to wires, and wired to the motherboard.
Hardwired. The term can be used for either scenario.
That's the way it was originally?

K

Let's go on.

The DC Power Jack is connected to the DC to DC power circuit; on the motherboard. (Power/Charging circuit)
This circuit is near where the DC Power Jack is mounted, or where the DC Power Harness plugs in.

In the circuit are Surface Mount Devices that are prone to go bad.
One is the Power MOSFET's, the second are MLCC's.

(Multi-Layer Ceramic Capacitor.
They, and the P.MOSFET's, are SMD/SMT
Surface Mount Device/ Surface Mount Technology)

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

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

Let's use the 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

These series of Notebook PC's use the;
Fairchild Semiconductor International - FDS6679 - Power MOSFET, and the,
Alpha & Omega Semiconductor Limited - AO4407 - Power MOSFET.

Look at the second photo down, with the AO4407 circled in Yellow.
Immediately below it, (Right corner), and immediately to the right of the AO4407; are MLCC's.
Smaller rectangular object with a dark wide band in the middle of it.

There is one above the one, to the immediate right of the AO4407; one above it, one to the Right of the top one; and one to the right of it.
There are also 4 smaller examples to the bottom/left corner of the AO4407.

Look to see if any are burned/blackened.

Example of availability, and cost of FDS6679, and AO4407,

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

Scroll down. One Dollar and one Cent, USD.

http://www.mouser.com/Search/Refine.aspx?Keyword=AO4407

Here we see the AO4407 is phased out.
Using one of the cross-reference examples given,

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d

78 Cents USD.

Just to show examples of MLCC's that are SMD/SMT.
The examples I chose are 4.7uf (MicroFarad), and 16 Volts. (DC)

http://www.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-b2cj?P=1z0wrjcZ1z0x565

Scroll down.

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

You can use a 25 Watt soldering iron, instead of a Soldering Station.
[ Plus Rosin core solder, rosin solder flux paste, flux paste brush, and Desoldering Braid. (Solder Wick ]

http://www.youtube.com/watch?v=b9FC9fAlfQE

Can things be worse? Yes,

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


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


Dec 22, 2012 | Toshiba PC Laptops

1 Answer

Replace fuse in laptop


No fuse.

You've used a multimeter, to check that the AC adapter (Charger), is putting out 19 Volts? (DC)

AC adapter checks out, or wasn't the problem?

Then the Power MOSFET's on the motherboard took a hit.
(Or maybe just one)
Also check the MLCC's.
(Multi-Layer Ceramic Capacitor)

!O_O!

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

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

Located in the power circuit section of the motherboard, and close to the DC Power Jack. (DC_IN. The jack on the laptop that the AC adapter plugs into)

Here is an example using the HP Pavilion dv6000 series, and Pavilion dv9000 series Notebook PC's,

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

They use the Fairchild Semiconductor - FDS6679 - Power MOSFET, and the Alpha & Omega Semiconductor - AO4407 - Power MOSFET.

Looking at the second photo down, that has the AO4407 circled in Yellow;
To the right of the AO4407 is a MLCC.
Rectangular in shape, with a dark wide band in the middle.

There is one above it, one above that one, one to the Right, and one to the right of it; of the same size. (And values)

Let's take a look at the availability, and price of a FDS6679,

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

Scroll down.

$1.01 USD

AO4407,

http://www.mouser.com/Search/Refine.aspx?Keyword=AO4407

Phased out. Let's look at one of the cross-reference examples shown,

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d

78 Cents USD

Examples of MLCC's, (They are also SMD/SMT.
Surface Mount Device/ Surface Mount Technology),

http://www.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-b2cj?P=1z0wrjcZ1z0x565

Not the correct values. I pulled up 4.7uf (Microfarad) capacitance,
16 Volt; examples.

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

http://www.youtube.com/watch?v=b9FC9fAlfQE

Now if we're talking a lightning strike power overload, dunno kid.
Motherboard, Processor, Ram Memory, Harddrive, etc; could be fried.

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

Dec 14, 2012 | Acer Aspire 55341121 PC Notebook

1 Answer

How do i locate the faulty capacitor on a dell d610 which is not charging


Don't believe it is a faulty MultiLayer Ceramic Capacitor,
(MLCC, and it is SMD. Surface Mount Device)

OR, don't believe it is just one.

Believe it to be bad Power MOSFETS, and MAYBE one, or two MLCC's.

MOSFET,

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

Power MOSFET,

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

Now,.....let's look at the HP Pavilion dv6000 series, and Pavilion dv9000 series; and their P>MOSFET's used, and MLCC's,

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

The Fairchild Semiconductor International - FDS6679 - Power MOSFET, and the Alpha & Omega Semiconductor - AO4407.

Looking at the second photo, that has the AO4407 circled in Yellow; observe the rectangular shaped object to the immediate right; that has a wide dark band on it.

That is an MLCC. MultiLayer Ceramic Capacitor.
There is one above it of the same size, one above that one, and one to the right of the top one.

THESE generally blacken, or blister (Burn), when have gone bad.

SOMETIMES the P.MOSFET's do also, but do NOT count on it.
There may be no outward visual signs of failure.

http://www.dell.com/support/troubleshooting/us/en/19/Product/latitude-d610

Dell Latitude D610 Service Manual (1628KB)

http://www.ebay.com/itm/Dell-Latitude-D610-Motherboard-MF788-NF554-31JM5MB0070-/290819114476?pt=Motherboards&hash=item43b62b85ec

BOTTOM view of motherboard.
Look at the left top corner. Where it states the red - ALI / SYS

The Black rectangular object with the smaller rectangular hole in the center; and full of socket holes; is the Processor socket.
(To the right of the red SYS)

Above the Processor socket to the very Left/Top corner; is the DC Power Jack. Where the AC adapter (Charger) plugs in.
Below it are two rectangular Power MOSFET's.

Also look under the motherboard in that area. (Actually it is the Top of the motherboard)

No sir. Do not know manufacturer, nor rating.

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

DO know that an FDS6679 is $1.01 USD, though.

http://www.mouser.com/Search/Refine.aspx?Keyword=AO4407

DO know that the Alpha & Omega AO4407 is phased out, and the examples are a cross-reference.

This cross-reference example is 78 Cents USD,

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d

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

I don't like the title. Just wanted to show you the beveled tip.

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

Regards,
joecoolvette

Nov 24, 2012 | PC Laptops

1 Answer

I have a acer extensa 5220 even though i have replaced the battery and the charger lead it still does not charge the battery.


Could be one of two problems.

The Positive or Negative lead on the DC Jack has bad solder joint (replace)

Bad mosfet in the charge section of the laptop. Usually a AO4407 or FDS4435. (shop repair)

May 02, 2010 | PC Laptops

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