Question about Toshiba Satellite A135-S2276 Notebook

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Wiring problem where do i connect the 5 cables from the on switch to the circuit board for a toshiba 3300m

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It's usually underneath the motherboard, but just look around if you don't see it on the top of the motherboard just extend the wire as far as it will go and look around there. It can't be further away then the length of the wire.

Posted on Feb 21, 2009

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Hp8710w


Have it checked in service. This could shortcircuit the display and burn it

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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 PC Laptops

2 Answers

I have screen flicker on my Toshiba Portege M800 notebook, which stops when I press any part of the notebook.


sounds like a loose connection on the mother board or it could even be a frayed hinge wire try those to start with ok

Jun 03, 2011 | Toshiba PC Laptops

1 Answer

How do i remove back and reinstall fan?


Welcome to Fixya

Here's the procedure:

1. Shutdown the laptop and remove the AC adapter. Disconnect any devices, such as a printer or external DVD-ROM or drive, that are attached to the laptop
2. Remove the laptop battery. Turn the laptop upside down, slide the battery release latch and then pull the battery out of the bay.
3. Unscrew the hard drive cover. Grab the hard drive tab and shift the hard drive to the left to unplug it. Lift the hard drive out of the bay.
4. Unscrew and remove the PCI memory cover, the optical drive cover, and switch cover.
5. Unscrew the two screws that hold the keyboard to the base, these are located in the middle of the rear panel. Flip the laptop over so it is right side up, open and remove the keyboard by using the keyboard release switches located above the keyboard. Next, unplug the Toshiba Qosmio E15-AV101 Fan cable.
6. Close the laptop and turn it over so it is bottom up. Unscrew the display assembly screws located under the laptop screen hinges. Turn the laptop over so it is right side up. Open the laptop and unplug the display assembly cable and disconnect the wireless antenna from the display assembly. Unscrew the display assembly from the laptop base and remove.
7. Unplug the mouse pad cable. Turn the laptop over so the bottom side is up and unscrew the base screws which are located along all four sides of the laptop base. Gently remove the base of the laptop.
8. Turn the laptop over so it is right side up. Unplug the fan cable from the circuit board. Unscrew the screws holding the Toshiba Qosmio E15-AV101 CPU fan assembly to the laptop. Lift the fan assembly out of the laptop.
9. Insert the new Toshiba Qosmio E15-AV101 CPU fan assembly into the lap top. Screw the assembly unit to the lap top and plug the Toshiba Qosmio E15-AV101 CPU cooling fan cable into the circuit board.
10. Reassemble the laptop by repeating the previous steps in reverse order.

Thank you for using Fixya!

May 10, 2011 | Toshiba QOSMIO E15-AV101 Notebook

2 Answers

Screen blacks out while rest is still on, is a dv7-1285dx


This is a backlight issue. Either the HV/backlight board is going bad or the wires that go to it through the hinge is broken/making poor connection.
Rock the screen back and fourth. if it goes on and off, then it is the wires. If not then probabbly the board.
If it is the wires, then you will have to order the screen (off ebay) with the cable (unless you can order just the cable) or you will have to order the backlight board.

Jan 18, 2010 | HP Pavilion dv7-1285dx Notebook

1 Answer

My toshiba laptop cannot be switched on. Looks


It depends on if the DC jack is a direct solder to the motherboard or if it a jack and cable connection. If it is directly soldered to the motherboard, the repair can be done in the home with the right soldering tips but patience is needed because of the size and quantity of the solder points and the fact that the PCB board and its electrical inserts are fragile to handling. If the DC jack is connected to a cable which in turns plugs into a socket on the motherboard, then it is simply a matter of disassembly, pulling out he cable and replacing.

Sep 16, 2009 | Toshiba Satellite A65-S1762 Notebook

1 Answer

Toshiba laptop a105 dead screen


it looks like the power supply for the light on the lcd screen os disconnected.If you can go deper to dissassemble the laptop you will find the connectors(like small plugs).check all the wires connecting to the screen.

Oct 04, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Turned on and smoke


Is the burnt circuit on the motherboard or the power switch circuit board that plugs into the motherboard? Big difference, if the burnt circuit is on the motherboard then yes the motherboard is done and will have to be replaced, but if it's just the power switch circuit bard, then this is replaceable.

Aug 28, 2008 | Toshiba Satellite A105-S4334 Notebook

2 Answers

Screen is white, no picture


Ask these people for advice theyre in the United States...... http://lcdrepair.net

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