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Free download schematic diagram laptop mother board toshiba tecra8000

I have SONY VGN-B1VP laptop when press power on key only led of power & battery is on and PC not have any function please help me

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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AO4407 is obsolete too.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

Posted on May 01, 2013

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I have Sony VGN-FS630/W about 5 years, that machine was very helpfull. Never has a major problem. Few days ago I had use like normal day, shut off like always the same, and teh next day don't start at all....


OK... TRY to start your SONY with the batter removed... will it start? If it does, buy a new battery and DON'T run your Sony for very long without one!

Your Power Supply may have failed so suspect that first. They are about $11 or so including shipping. See the link below.

Now a new BATTERY is much more expensive starting around $27 and up ~ so I would try a new supply first! Also some shippers are getting stinky about battery shipments too so that may have added to costs?

Surprisingly, mother boards don't just up and fail... Usually some connections like USB or audio functions fail first... so try to think of a bad mother board last. On desktops if your "on board", "mother board provided" audio/Network/WiFi/USB fails... it's a snap to plug in a replacement card to get them working again!

NOT so easy on a laptop.

Anthony

19 5V NEW AC Adapter For Sony Vaio VGN Laptop Battery Charger Power Supply...

Nov 10, 2017 | Sony VAIO VGN-FS630/W Notebook

1 Answer

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.
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.
8. When you are done, re-assemble back the laptop.

Sep 09, 2010 | Sony VAIO VGN-FW140E/W Laptop

1 Answer

My toshiba tecra8000 laptop displays toshiba logo for 1 second and then it displays password.Bios batteries have been removed.code no of flash eprom on mother board is unknown tome.If I get the code no of...


The BIOS password is removed by the BIOS configuration, you need the BIOS password to get into the BIOS configuration.But if you do not have the BIOS password then you need to construct this dongle device.
TOSHIBA BIOS PASSWORD DONGLE
You can build a dongle that plugs into the printer port.Purchase a 25 pin male D sub connector and solder insulated wires to the various pins as listed below. The pins are numbered on the connector
http://www.tilman.de/sonstiges/toshiba/dongle1.jpg this is a picture of the finished dongle


Wire the pins as follows :-1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15
Plug the finished dongle in the printer port and power up the laptop. The password will be reset, go into the BIOS configuration to check the BIOS password, you may have to disable the BIOS password.

Mar 09, 2010 | Toshiba Tecra 8000 Notebook

1 Answer

How to check mbx-160- vaio


I HAVE A SONY VAIO LAOTOP VGN-N31S DO NOT START UP. LED LIGHTS ARE ON. SCREEN IS DARK. CAN ANYONE HELP

Feb 20, 2010 | Sony Computers & Internet

5 Answers

Ethernet drivers for sony vgn-fs115m


Hey MIDO Try This Tool

VAIO Launcher 1.4.11 Update Program


This program will update VAIO Launcher pre-installed on the VAIO model listed below.

VGN-S4HP/B
VGN-S4HRP/B
VGN-S4M/S
VGN-S4XRP/B
VGN-S4Z/S
VGC-V3S
VGC-V3M
VGN-FS285H
VGN-A497XP
VGN-A417M
VGN-A417S
VGN-FS295XP
VGN-FS215Z
VGN-FS215M
VGN-FS295VP
VGN-FS215B
VGN-FS215E
VGN-FS215SR
VGN-FS215MR
VGN-FS285M
VGN-FS285B
VGN-FS285E
VGN-FS215S
VGN-B3XP
VGN-B3VP
VGN-S4XP/B
VGN-S4VP/B
PCG-K415S
PCG-K415B
VGN-FS195XP
VGN-FS195VP
VGN-FS115S
VGN-FS115Z
VGN-FS115M
VGN-FS115E
VGN-FS115B
VGN-FS115ZR
VGN-FS115M -- ( Thats Ur MODEL)
VGN-A397XP
VGN-A317S
VGN-A317M
VGN-S3XP
VGN-T2XP/L
VGN-T2XP/S
VGN-T2XRP/S
VGN-S3VP
VGN-S3HP
VGC-RA304
VGC-RA204
PCV-RS704
PCV-RS702
VGC-M1
VGC-V2S
VGC-V2M
VGN-T1XP/L
VGN-T1XP/T
VGN-B1XP
VGN-B1VP
VGN-S2XP
VGN-S2VP
VGN-S2HP
VGN-S2XRP
VGN-S2HRP
VGN-A297XP
VGN-A295HP
VGN-A217S
VGN-A217M
VGN-A215M
VGN-A215Z
PCG-K315Z
PCG-K315S
PCG-K315B
PCG-K315M

This update resolves the problem of registered applications not launching from the VAIO Launcher toolbar.
Note: This program requires VAIO Zone 1.2.05 or later. If your VAIO model comes with VAIO Zone 1.2.02, you must first update VAIO Zone before running this program.
Download and installation
1. Download the file SOAVZN-01028300-UN.exe and save it to a download directory
2. Close all running applications
3. Go to the download directory and double-click SOAVZN-01028300-UN.exe
4. The InstallShield wizard starts
5. Click Next and wait while setup is installing the new software
6. Click Finish when the installation is complete

HERE

Apr 15, 2008 | Sony VAIO FR130 Notebook

1 Answer

Search for sound and VGA card driver for this model


http://notebook.free-driver-download.com/Sony/36822/Sony-VGN-TXN25-TXN27-TXN29-Notebook-Alps-Pointing-Device-Driver-7.0.501.5-Windows-Vista.html

Jan 07, 2008 | Sony VAIO VGN-N250N/B Notebook

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