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Power problems sony laptop motherboard - Sony VAIO K45 Notebook

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It may be problem of ur laptop button so u should check it

Posted on Nov 14, 2009

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Free download schematic diagram laptop mother board toshiba tecra8000


Believe problem to be one of the Power MOSFET's, in the DC - DC circuit on the motherboard

http://en.wikipedia.org/wiki/DC-to-DC_converter

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

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

The two Power MOSFET's used; are the Fairchild Semiconductor Industries -FDS6679 - Power MOSFET, and the Alpha & Omega Semiconductor LTD - AO4407 - Power MOSFET.

Showing availability and cost. Using just FDS6679 for an example,

http://www.mouser.com/Search/Refine.aspx?Keyword=fds6679

Obsolete. Using cross reference match example,

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

One dollar and one penny USD.
AO4407 is obsolete too. Cross reference match example for it, cost is 78 cents USD.

NOT stating the P.MOSFET's are used on your Sony VAIO's motherboard. Showing what a Power MOSFET looks like for this type of application, and availability/cost.

Look on your motherboard in the DC - DC converter circuit area, where the DC Power Harness plugs in.

[The AC adapter (Charger), plugs into the DC Power Jack on the laptop. (DC_IN)

For your laptop the DC Power Jack is connected to wires, that end in a male plug connector. The male plug connector plugs into the motherboard.

It is now called a DC Power Harness ]

Let's take a brief look at a motherboard example,

http://www.ebay.co.uk/itm/Sony-Vaio-PCG-6L1M-Laptop-Motherboard-A1171213A-Spares-Repair-NO-POST-/360566230317?pt=UK_Computing_Housings_Touchpads&hash=item53f36c0d2d

(Sony VAIO PCG-6L1M and VAIO VGN-B1VP are supposed to be the same)

The Main view shows up automatically, with the Top view of the motherboard.
Scroll down for Bottom and Top view.

Again there is a Main view, and this time two smaller views to the Right.
Top small view is Top view of motherboard.
Bottom small view is Bottom view of motherboard.

Looking at Bottom view of motherboard, believe DC Power Harness plugs into the Right side.
Series of Power MOSFET's are on the right side, also.

WEAR an ESD wrist strap, and have it's alligator clip attached to a good ground source.
Here is free access to the Service Manual.
You want VGN-B

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-sony

Bottom line -> VGN-A
Scroll across, click on VGN-B
(It's a PDF file)

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

Regards,
joecoolvette

May 01, 2013 | Computers & Internet

1 Answer

Hi, i'm having sony vaio (VGN NW380F) laptop. I bought this laptop just 1 year back. I'm having problem since last week, the laptop gets power off automatically. Its not specific to Operating system or any...


It could be a problem with the motherboard, basically because the power supply to the laptop is built in to the motherboard. I would first check the battery though. Sometimes this can happen with a bad battery, even if the laptop is plugged in. Try removing the battery and using the laptop while it's plugged in with no battery.

If it works fine with no battery and power cord connected, I would get a new battery.

If it is still a problem with the battery out, it's likely it could be a problem with the power supply that's part of the motherboard. If that's the case, I would try to call Sony and see if it is covered under warranty....or if they have had problems with this. With a year old laptop, this should not be failing like this.

Mar 30, 2011 | Sony VAIO VGN-NW380F/B PC Notebook

1 Answer

My sony vaio centino t2250 wont turn on and power is gettting to the cord


Could be a number of issues. Try the simple trick of removing battery and power cord and pressing the power button a few times to drain any static electricity. Replug just the power cord, NO battery, and they try starting.

If this fails, you might be looking at a problem on your motherboard. Motherboard repair will range from $100 upwards to $250. Unfortunately if the above doesn't solve it, you'll have to take it to a laptop repair store to diagnose the problem. We offer free checkup on laptops and I'm sure laptop repair stores in your area can check it for free and let you know the problem before you decide to fix.

You can visit our website for free laptop repair help: Laptop Repair Mississauga http://www.laptopmart.ca

Feb 19, 2011 | Sony VAIO Notebook

2 Answers

My vgn-fs810/w laptop is not powering up. Battery,


Motherboard is faulty. You can try removing the hard drive and dvd drive to make sure those aren't shorting out the motherboard. You can also try each memory stick to make sure neither one is shorting out the motherboard.

Apr 28, 2010 | Sony VAIO VGN-FS810/W Notebook

2 Answers

Power socket for sony vaio is broken how do I


On a Sony, many times the power socket is a separate piece that can be replaced. Unlike many laptop motherboards, these power sockets are a separate item the plug into the motherboard. \

Bad news is you have to dissassemble the computer to get at it.

Dec 22, 2009 | Sony VAIO FW Series VGNFW275JH

1 Answer

Power switch flashes on an off on my Sony Vaio laptop when I put my finger on the power button to switch it on, but nothing else happens, means laptop cannot be switched on. What could have gone wrong?


tipycaly this is motherboard power problem, but not always. remove battery and try again. if not, find someone who knows electronics, he can help you.

May 30, 2009 | Sony Computers & Internet

1 Answer

Sony Sz120p no video or exernal either, but powers on


Sounds like the GPU is after failing (or the motherboard). Honestly, not worth repairing, as either problem will involve replacing the motherboard, which is dearer than a new laptop (unless you can salvage one from somewhere).

Hope this helps.

Apr 28, 2009 | Sony VAIO VGN-SZ120P/B Notebook

1 Answer

Internal fuse need replacing


Sorry, but i don't think there is fuse on motherboard.
More likely its a loose DC socket cable to motherboard or faulty AC adapter.
If Dc - ok, AC - ok, then its a faulty motherboard.

Mar 12, 2009 | Sony VAIO FR130 Notebook

2 Answers

Wont boot up when plugged in but boots from battery


When you plug it in, does it show that the battery is charging? If not, then the DC Power socket has failed on the laptop, so a new power supply would not fix the problem.

The manufacturer will tell you to replace the motherboard, however the DC power sockets are readily available, and relatively easy to fit.

Mar 05, 2009 | Sony VAIO PCG-K35 Notebook

1 Answer

Dead Sony Laptop


If power supply is supplying correct voltage, then you do not need power supply PCB.

Try starting the laptop with AC adapter and no battery, if battery is shorting out you may get same problem.

Test the soldering joint on the AC socket and laptop motherboard, if there is a bad soldering on laprop ac adapter socket, you get same symptoms.

If it is none of the above, and the adapter is fine, then it is usually a faulty motherboard.

Nov 16, 2008 | Sony VAIO PCG-V505CP Notebook

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