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  Toshiba Satellite P25-s520 AC Power Problem 
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Mmicrosysm Sep 03, 2005, 03:12pm EDT Report Abuse

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John Jones Sep 22, 2005, 10:57am EDT Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I have the same problem, did you ever figure it out. Looking for any help I can get.

Scranton, PA

Syd Del Oct 25, 2005, 05:25pm EDT Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I have a Toshiba Satellite P10-804 and have the same problem. I'm going to uninstall the Toshiba Power Management software to see if this helps.

Syd Del Oct 27, 2005, 04:11pm EDT Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Uninstalling the Toshiba Power Management software has not changed anything - the problem persists. It's very annoying - the lights on the front of my Toshiba show that it's getting AC Power, but the battery percentage keeps decreasing. I have found that when this occurs, if I power cycle the unit then everything is fine again for a while (ie. the red light on the front indicates the battery is being charged, and the power meter shows AC Power and the battery percentage as well as "(charging)" next to the battery percentage). But then something happens, the red light at the front goes off, and the battery discharges.

I also tried removing the battery completely to use the unit without having to restart Windows every 2 or so hours, but this was much worse as it results in the unit just turning itself off without warning (not healthy).

Any help on this would be REALLY appreciated.

Kevin Guyer Nov 09, 2005, 09:17am EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I've got the same problem and have wasted hours now wiggling the power cable to get that coveted orange light to come on. The only way I can get a connection that charges the battery now is to partially plug in the power cable into the laptop and at an angle (absolutely absurd).

For a while there I could cycle the machine and it would restart in a 'charging' mode, now the problem has devolved where that does not fix it if the power cable is not properly aligned. I nearly bought a new power brick thinking that it was the culprit (maybe it is...)

This being the case I suspect that this is not going to be fixed by anything short of the replacing of some components.

Matt Riddle Nov 09, 2005, 12:45pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I have the exact same problem. It seems to me that the what you plug the adaptor is loose. (sorry for my ignorance of the jargon) It may have always been that way but I can't think of anything that would cause it to become so loose. It seems I used to just reach around and plug in the adaptor and that was that. There was no looseness or wiggling. I'm half-tempted to open my case and see if something isn't loose in there, but with the extent of my knowledge I think that may be a bad idea.

I should just call Toshiba...I'll update you all here if I learn anything pertinent.


VJ Patel Nov 13, 2005, 06:11pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I have a p10-304. It charges when its switched off or on standby or somthing. When i switch it on, it charges until windows is fully running and loaded. Could that be the problem?
Well the charging light switches off but the AC power is still recognised and still drains battery power.
Desperately need help here.
I think Toshiba have a lot to answer for with the same problem occuring with a lot of people!

Rafael Coelho Nov 13, 2005, 11:46pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I also have the P25-S520 and I'm having the same problem, except for the fact that I'm reinstalling my system from zero and the b* still shut itself off in the middle of the installation. The AC cable is perfectly pluged and the light shows that the battery is fully charged so I kind of discarded the Toshiba Power Management thing...

Still looking for a solution. I'll keep u updated.


Matt Riddle Nov 14, 2005, 01:30pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
<typed while holding my ac cord in>

Well, I opened my case and discovered that the housing that the ac cord gets plugged into is loose and have concluded that this is the source of the problem. It is attached (or should be *shakes fist*) to the motherboard. This is the limit of my abilities and my only course of action at this point is to take it to a service center. I hope you all have better luck.


VJ Patel Nov 20, 2005, 06:18am EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Well, i opened my laptop up, and found that all the AC power connections were all well and working.
I have a theory that there may not be enough power supplied from the power supply/charger. An electician found that the laptop requires a certain current, but the power supply offers less (not enough).
Hopefully I can get hold of another power supply with the required current.
Another less likely problem may be that the battery is at fault. Has anyone tried to replace their battery?

James Hafer Dec 13, 2005, 07:06pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I'm having the problem also, with my Satellite P15-S479. Any new developments?

Rafael Coelho Dec 15, 2005, 02:10pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Good news!! (at least for me!)

Before sending to the Depot I decided to open and check my notebook. Figured that it was just A LOT of dirt and dust blocking the air flux from the fans through the heatsinks and out. The computer was just overheating and shuting itself off. Got a duster and a soft brush and cleaned it. It's working great! Making less noise and cool!

Hope you guys have the same luck!


James Hafer Dec 23, 2005, 10:51am EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I was having the same problem with my Satellite P15-S479. If I powered it up on AC with battery low or fully charged, the battery light would register amber or green appropriately--but if I momentarily removed AC power and plugged it back in, the amber/green light would go off completely and the Battery Power Meter would say Current Power Source: AC Power, Online Discharging. If I started on battery power then plugged in AC, same thing would happen. I had to power down or hibernate then restart on AC power in order to get it back to normal.

So, I disassembled the system, just shy of motherboard removal, and blew out the whole thing with compressed air. There was a substantial amount of lint and dust (dust-bunnies). I put it back together and it is working fine. No more problem.

In my 25+ years in the computer industry, I've lost count of how many times dust-bunny extermination has worked similar mirracles. I suspect that some dust bunnies are conductive as well as being an insulator to normal heat transfer.

Note: Disassembling your laptop is not something I'd recommend to the novice user. If you're not completely 150% comfortable with hardware repair I'd suggest you find somebody who is to do this job.

Note: On well-used systems, dust-bunny extermination should always be attempted prior to component replacement. It can save you mega-bucks in parts costs.

Good luck with yours!


Tim Cayer Dec 24, 2005, 03:13pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem

Matt Riddle Dec 24, 2005, 06:08pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I just took mine to be serviced. Luckily my warranty is good until 12/27, cutting it close though.

I will give you all a full report when the service center calls me back. I would suggust you get it taken care of if your units are still covered though because mine just got to the point where it wouldn't work at all.

I don't think Toshiba will be keeping me as a customer...

Good luck to you all, Merry Christmas // Happy <<insert holiday you celebrate>>

Phil Buendia Dec 29, 2005, 01:02am EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
I have a P15-s409 which gradually develop the problem described by most of you. At first, i thought it was a heat problem due to the dust bunnies decribed. After a thorough cleaning (removing conductin paste and re-applying) the problem persist. The symptoms are as follows:

The three LEDs which denotes the following (from the left in this order):
1. green=ac power
2. blue=system on
3. amber=battery charging, green=battery fully charged

What I am experiencing sometimes is if the third LED is not lit up, the system has a high probability of shutting off. Which makes sense due to if the AC cord is wiggled slightly, the system loses power. What I don't understand is why does the 3rd LED fail to light up? Sometimes when it is lit and it would suddenly go off which is a sign that the laptop will probably abruptly shut off in any minute.

I can't tell whether this problem with the battery or if there is a loose component in the power subsystem. But the reason that it could be the battery is that sometimes the TOSHIBA POWER MGMT utility reports that there's 0% charge. I also started experiencing the problem the same time I noticed that the battery life is not lasting as much. What makes me think it is a loose component because when I plug the AC power, if the 3rd LED (amber) does not light up, a wiggle or a unplug and re-plug on the the back of the laptop usually makes the 3rd LED come up.

My plan:

I am going to try to contact toshiba and find out any useful info. Maybe the support rep can tell me if this is a known issue. But, I am not expecting that they will entertain me much since my unit is out of warranty.

I am going to attempt to purchase a new battery.

I will post my findings in about a week and a half.


Matt Riddle Dec 29, 2005, 02:22pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Well, I got my lappy back. They had to replace the motherboard but it works like new now. I hope you all have better luck.

Phil Buendia Dec 31, 2005, 05:25am EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
After wasting about 2.5 hrs disassembling my laptop, I did not find anything on the MOBO. However, after putting everything back together, I figured out what was wrong. The power adapter's tip is not making good contact with the power port on the back of the laptop, which causes the laptop not to conduct and probably unable to get enough power it needed.

Temporary fix:

I wrapped the AC adaptor's tip with two wounds of aluminum foil.

Tomorrow I am going to purchase a conductive tape and wrap the tip with two wounds of it.

Even with the foil laptop seems to be working fine.


Zachary Unger Jan 05, 2006, 02:40pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Apparently Toshiba is having this problem with a number of models. I have a P25-s520 with the same problem, and I found another topic on this site about the A75-S226 model having the exact same problem. They have had some development without having to send it in to Toshiba. The thread is here: . In this thread there is also a link to a website that tells how to take apart each model of Toshiba laptops, as well as a possible way to fix the problem by soldier a solid wire between two components. I am hoping to be able to do this myself, or allow a more knowledgable friend to do this fix for me as my warranty has expired, and my service plan from best buy will take over 1 month, and a replaced motherboard to fix the problem. Hope this helps someone.

Tim Cayer Jan 05, 2006, 02:47pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem

Mmicrosysm Jan 05, 2006, 02:58pm EST Report Abuse
>> Re: Toshiba Satellite P25-s520 AC Power Problem
Unfortuntaly this does not pertain to my problem as it will run off the AC if the battery is not present. Also if the battery is over 90% charged it works off the AC as well.

Guess it's back to the drawing board for me..........

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