Question about Toshiba Satellite (K000004080) Motherboard

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Toshiba A135 on/off switch

Laptop will not power-up when on/off swith is depressed. Have tried removing battery with out success. Can the switch be repaired or is a new mother board required?

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If you haven't given up on your computer the solution maybe not the switch, but something loading the internal supply. The most common piece to fail is the cpu. The failure is usually from excessive heat with the cooling path clogged or not letting the air to get the opening on the bottom for the fan. Also as laptops get older the cpu's heatsink grease needs to be cleaned off and new heatsink grease put on and at the same time a thorough cleaning of the heatsink fins. If the cpu fried you may see some brown hazing on it surface.

Posted on Mar 30, 2009

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Some of the manufacturer used the same switches, so try to find another one which is actually the same but fit to that part, before buying of new board

Posted on Jan 16, 2009


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I'm having a problem with the Toshiba Satellite A135-S7403 powering off immediately after it is powered on. What could be the problem(s)?

It could end up being a hard drive problem, or a power supply problem. Make sure your power cord is plugged in completely to your laptop when you turn it on. To verify you have a successful power connection, remove the battery from the laptop and just use the power cord. If it does not come on at all when you are just using the power cord, try wiggling around the connection. Most power cords have a light that comes on when it is plugged into the wall. If you do not see a light, try a different outlet. If you still do not have a light, you may want to try replacing the power cord.

May 04, 2011 | Toshiba Satellite A135 Notebook

1 Answer


Hi There and Welcome to FixYa!

It's really not ideal to "overcharge" your laptop computer as this would result to this problem that you're having right now. The primary step that you should try, having determined that the AC adapter works, is to :
  • Unplug everything from your laptop, including the power cord along with all USB connections.
  • Carefully remove the battery of your computer.
  • Press and hold on the "Power" button for about 10 seconds.
  • Connect the AC power on your laptop (without the battery) and try to turn it on.
  • If successful, do the same thing with the battery attached this time.
This would help you zero down on the cause of the problem if it's the battery, ac adapter or the computer's motherboard. I am highly recommending for you to contact Toshiba's technical support if the above steps did not help you at all :

Toshiba Support

Thank you for using FixYa.

Mar 22, 2011 | Toshiba Satellite A135-S4527 Notebook

1 Answer

Toshiba a135-s2246 power comes on but no picture?

Hey Chris,

the laptop has not fried, all you need to do is as below

1. switch off the unit,
2. Dicsonnect every thing conenceded to the unit even the power supply
3. Remove the battery.
4. Press and hold the power button for 40 seconds to a min.
5. Resonnect battery and power only, try to power on.

In case this does not work, please call the customer care and send the unit in for service.

Jul 10, 2010 | Toshiba Satellite A135-S2276 Notebook

1 Answer

Froze up last night, turned off, will not turn on now

Try removing the laptop from A/C power, remove the battery, then hold the on/off switch in the ON position for ten seconds. Replace the battery, plug in to A/C and try booting. Laptop may be frozen in 'sleep' state; I have seen this problem with other Toshiba's before.

Feb 11, 2010 | Toshiba Satellite A135-S2386 Notebook

1 Answer

Toshiba A135-S4527 cmos battery dead

I found where the cmos battery is located. By the Toshiba tech support website , it's next to the PCMCIA Slot, just behind it. To get to it, Take off LCD, keyboard, top palmrest, hard drive, battery, memory, top power cover,switch board, modem, network. and some others. Too many to describe here. Items to remove not in order.
I Have the service manual downloaded already.

Let me Know


Aug 07, 2008 | Toshiba Satellite A135-S4527 Notebook

2 Answers

Toshiba Satellite A135 laptop

Try disconnecting power adapter and removing battery for two minutes. If the laptop still does not boot then there is an hardware problem. You can try taking out and putting back ram modules, but my suggestion is to take the laptop at a repair shop, if you cannot fix it by removing battery.

Jul 29, 2008 | Toshiba Satellite A135 Notebook

3 Answers

Toshiba laptop power light on but not working

Try this.Your VGA is problem or your battery is fully charge please fully charge your battery atleast 8 hours and then press your power will on your loptop system.
plz Call 09944377607 V.RAJA

Jul 25, 2008 | Toshiba Satellite A135-S4527 Notebook

1 Answer

Blue screen Freeze!

perhaps your OS has thing is sure ..... your display is ok u have an OS problem

Jul 15, 2008 | Toshiba Satellite A135-S4527 Notebook

1 Answer

Toshiba Satellite A135-S2276... went in sleep mode.

Try pressing power button once. Does Windows logon screen come up?

Jan 13, 2008 | Toshiba Satellite A135-S2276 Notebook

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