Question about Toshiba Satellite A75-S211 Notebook

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I have a Toshiba Satellite A75. Keeps turning ON

I have a Toshiba Satellite A75. When I turn it off or shut it down, it keeps re-powering itself. Tried it on battery only and/or AC only and reacts the same way.

Any suggestions on what the solution to this annoying problem?

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2 Answers

Toshiba Satellite L300 shuts down when ac power plugged in


How about this step, try to turn off the laptop itself. Remove the cables and battery just like what you did before, then press and hold the power button for 10 seconds. Then, reinsert the cables and battery on the laptop and then turn on the computer itself. If the laptop restarts, shuts down or freezes with the AC power cables, two things that you should seriously consider. It might be the power cable itself, AC cable port or the circuitry going to the motherboard. And since you have cleaned out the fan and heat sink, you have isolated that problem. Have you plug-in another power cable on your laptop? If yes, then check if it works. Otherwise, the main issue is that the AC port is loose or the circuitry of AC adapter going to the motherboard is not not working. You can re-open the unit and check the circuitry from the AC port going to the motherboard. You may check the circuitry from AC port to the power supply if it is ok. If symptom persist, please contact your local dealer...

Jul 03, 2010 | Toshiba Satellite Pro L300 Notebook

1 Answer

Power supply problems


Hello,

the problem is from the motherboard. One problem with toshiba laptop, is that they overheat too much.

Check if the fan of your laptop is working and make sure you keep your laptop where there is ventilation, so that air can enter into the laptop.

You could also open up the laptop, clean every dust on the motherboard and also the fan and cooler.

That's the area you should concentrate your attention on and not the battery or AC adapter.

Take care.


May 28, 2010 | Toshiba Satellite A75-S226 Notebook

1 Answer

Toshiba Satellite A75-S209 (PSA70U-09700E) PC Notebook will not start.power lights come on for both the battery and DC. There is no fan or hard drive sound.power button does not light up. pushing the...


Hi,

Take out the battery and try booting the machine on AC power only. If the machine boots up then let the operating system load up, the shut it down. Remove the AC jack and put the battery back in again, then power it up.

If it boots all is well if it doesn't then there could be a problem with the battery.

If the laptop won't start on AC power, what you could do is remove the system memory, clean the brass pins and the slots and then re-seat them/it.

Then try to turn the machine on.

Good luck.

Nov 13, 2009 | Toshiba Satellite A75-S209 Notebook

1 Answer

Wont charge while powered on or run on ac power


Sounds like a lose or burnt charge terminal.  Fixing would require disassembling the laptop and resoldering the loose or broken connections.  You might want to try a different AC adapter first.

Apr 21, 2009 | Toshiba Satellite A75-S211 Notebook

2 Answers

Toshiba boots up power light stays on and shuts down, bad m/b ?


I own a Laptop Toshiba Satellite A75-S2131.
This series have a problem with the cooling flow to the processor.
The processor overheats and the laptop shuts down.To solve this particular problem you must tear down the laptop and clean up the processor heatsink (you will find it totally plugged or partially dirty).
Find in the internet the step by step instructions (with photos) for dismantling this laptop. Do not forget to apply thermal paste between processor & heatsink.

I hope this solution helps.

Posted by MCampos

Mar 12, 2009 | Toshiba Satellite A75-S209 Notebook

2 Answers

Screen black & with no power


hi there,

you can follow this instruction and try to your laptop to resolved the problem.

A bad connection between DC-IN power jack on the system board and the system board is a very common problem with Toshiba Satellite M35X and Toshiba Satellite A70/A75 notebooks. If your laptop is out of warranty, then you can fix the problem by resoldering DC-IN jack on the system board. If it’s still under warranty, it would be fixed at no charge to you.
Problem symptoms:
  1. Laptop randomly shuts down without any warning.
  2. Power LED and battery charge LED start flickering when you wiggle the power cord or the AC adapter tip on the back or your laptop.
  3. The battery will not get charged.
  4. When you plug AC adapter, the laptop appears to be dead and there is no LED activity at all (DC-IN jack on the system board is broken).
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack. Toshiba Satellite M35X and Toshiba Satellite A70/A75 disassembly guides will help you to remove the system board. Take a closer look at the power jack on the system board with a magnifying glass. In most cases you get the power problem because of a bad connection between the DC jack and the system board, you’ll see a crack between the DC jack connector and the system board.
Here is an example of Toshiba Satellite M35X power jack. The crack occurs between the DC jack pin and the system board.
satellite-m35x-crack.jpg satellite-m35x-contact.jpg In some cases the connection is good, but the DC jack is bad itself. You can find a new DC jack for Toshiba Satellite M35X and Toshiba Satellite A70/A75 laptops here. Search for DC jack M35X or DC jack A75.
How to resolder laptop power jack yourself.
UPDATE:
Sometimes, after you replace the jack, you can see that the system board doesn’t get power at all. The battery will not charge and the power LED will not light when you plug in the AC adapter. So, here’s a possible explanation.
When a connection between the positive pin and the motherboard breaks (cracks), the power jack gets loose. You can feel it when you plug in the adapter plug. A loose power jack can damage the trace inside the hole in the system board. Take a look at the picture.
power-jack.gif As you see, the positive pin goes through the hole in the system board and you solder it on the top side. Right? What if the trace between the top side and the bottom side is broken somewhere inside the hole? I’ve seen it before a few times. In this case everything looks nice and clean on the top side. When you plug in the AC adapter, you get normal voltage readings between “+” and “-“ pins on the top side, but the power DOESN’T go to the motherboard at all, because there is no connection between the top and bottom sides. Test with a multimeter if there is a connection between the top and the bottom.
If the trace inside the hole is broken you still can fix it. You can run a wire to connect the top and the bottom sides. Be careful not to short something on the board.
Update:
Here’s another solution to fix the power jack problem, it shows how to relocate the power jack outside the laptop base. Check it out here: Toshiba Satellite A75 failed power jack workaround.
When you repair a loose power jack, it’s a good idea to check the jack on both sides of the motherboard. When you remove the top cover from a Toshiba Satellite A70/A75 laptop you can see only points where the jack is soldered to the motherboard as it shown on the second picture in this post, but you cannot see the jack itself as it shown on the first picture.
Removing the motherboard from Satellite A70/A75 laptop is a good idea because the jack itself might has a broken “+” pin, as it shown on the picture below. If the “+” broke off the base, you’ll have to replace the jack.
power-jack-broken.jpg

Feb 15, 2009 | Toshiba Satellite A75-S229 Notebook

1 Answer

Toshiba Satellite A75-s209 Laptop


The toshiba laptop has ways of checking if it will not charged

check the battety light if it coming on when it is plug in
If the not meaning the battery is bad
If the lights comes up and the computer is still not charging the battery test if the compter will power without the battery if it will then battery is bad
If the computer will not turn on even the lights on the panel shows activity then you can conclude that the AC adpter is bad

Jul 15, 2008 | Toshiba Satellite A75-S209 Notebook

1 Answer

Problem During Boot-Up


several things it could be but im going to look at the obvious the battery and cord hook up
laptops when plugged into contstant 120 power the battery is supposed to go into stand by mode and shut battery off so power dont leak into battery
if you have low battery with it plugged into 120 the comp will still think the battery is powering the laptop if battery dead then comp shuts down lack of power

other thing is somehow you caught a virus that reboots comp from dos screen mode
the main thing i always ask is what was the last thing that happened before it did what its doing now
example= was there a power surge pop up screens ect.

May 09, 2008 | Toshiba Satellite A75-S231 Notebook

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