Question about Toshiba Satellite L25-S119 Notebook

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AC/DC adapter My ac/dc adapter is not supply power to my laptop. Can I go to any electronics store to get an AC/DC adapter that works with my toshibia laptop

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Make sure the voltage and amperage is the same and the tip fits.
I use I-GO universal from Radio shack

Posted on Apr 19, 2008

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Dec 14, 2015 | PC Laptops

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What is the power output of ac dc adapter in jensen jta 460? Can this adaptor be changed with 220volt ac dc adapter with required dc output?


For Any Adapter:
As long as the Voltage and Power output of the power supply (wall outlet or other) matches the input requirements for the adapter whether 110V or 220V.at enough amp output; and
IFF the dc output of the adapter is exactly the same voltage and has for amps at a minimum matches the maximum amperage requirement for the input of the device, any of them will work, as long as it has the right connector with the correct polarity needed for the device!

Or, in other words...

Supply Output V = Adapter Input V
and
Adapter Output V = Device V
Adapter Output A(min) >= Device A(max)

Aug 27, 2015 | PC Laptops

2 Answers

The adapter light is on when first plugged in but then when I connect the adapter to my laptop the light goes off and it doesnt supply any power


I suggest check out the AC adapter first.

1) When plugged into power, and plugged into the laptop, gently wiggle the cable from the AC adapter TO laptop.

Any change?

Do the same on the power cord TO AC adapter.

NO?
Go on.

2) The port on the laptop that the plug from the AC adapter plugs into, is the DC Power Jack.
If we are discussing an Acer Aspire 5738Z Notebook PC, the DC Power Jack resembles this one, (Not installed),

http://www.batterysupport.com/acer-aspire-5738-jack-p-302046.html

(When I note the DC Power Jack, it is this link I will be referring to )

As you can see there is a Center Pin. All power removed from the laptop, use a small wooden, or plastic object, and see if this pin moves around.

ANY perceptible movement means a bad DC Power Jack.

DC Power Jack checks out it's back to the AC adapter.
Wanted to perform the easy diagnosis first.

This will require a multimeter. An economical, yet fine for this test multimeter, can be purchased for as little as $8 to $12.

Available in a multitude of stores. An auto parts store is but one example.
Analog or digital is fine.

http://www.youtube.com/watch?v=bF3OyQ3HwfU

(Analog is fine. Some of us still like 'em)

DC Voltage is what you are going to check.

Black probe lead (Negative) goes in the Common port on the multimeter. (COM)
Red probe lead (Positive) goes in the Voltage port on the multimeter. (V)

If the multimeter just has symbols around the Function Knob, set it to the dotted line over a solid line, symbol.

The plug on the end of the AC adapter, that plugs into the laptop, has a center hole, and a cylindrical metal shield surrounding it.

The Center Hole of the plug is where the red Positive lead, of the multimeter goes.

The outside cylindrical metal shell is where the black Negative lead of the multimeter goes.

Hold the AC adapter plug in one hand, and at the same time hold the red Positive multimeter probe in the center hole.

With the other hand touch the black Negative lead of the multimeter, to the cylindrical metal shield on the outside of the plug.

You should read 19 Volts (DC), or VERY close to it,

http://www.cellularfactory.com/laptop/ACER/3/305268/

I believe the AC adapter is the problem. Post back in a Comment as to your findings.

Regards,
joecoolvette

Apr 29, 2012 | Acer Aspire 5738Z-423G32Mn Notebook

1 Answer

Which ac do when a laptop compaq nc6400 is verr slow and doesnt charge the battery


What does the AC do? (Alternating Current)

Apparently not get rectified into DC electricity by the AC adapter, (Charger), or the rectified AC (Which is now DC), is not getting to the laptop.

Be sure the Battery is still good. They have a lifespan, and only last so long.

Verify, by performing a DC Voltage test with a multimeter, if the AC adapter is putting out the correct Voltage.

If it is an AC adapter for an HP Compaq NC6400 Notebook PC, the DC Voltage coming out of the AC adapter is supposed to be
18.5 Volts. (DC),

http://www.amazon.com/Notebook-Adapter-Presario-cq50-142us-cq50-110/dp/B001MQ4MNW

On the AC adapter plug going to the laptop, the center pin is the Positive connection.
The outer cylindrical metal shell is the Negative connection.

AC adapter puts out 18.5 Volts?
Have an assistant;

1) Gently wiggle the power cord coming TO the AC adapter.

2) Gently wiggle the cable coming FROM the AC adapter TO the laptop.

See if you get an intermittent reading on the multimeter. Indicates a broken wire.

[ An economical, but fine for this test, multimeter, can be purchased for as little as $8 to $12, here in the US.
Analog or digital is fine.
Available in a multitude of stores. An auto parts store is but one example ]

AC adapter checks out it's on to the DC Power Jack.
This jack is the round port on the laptop, that the plug from the AC adapter plugs into.

Battery removed use a wooden small object, and gently see if you can move the center pin around, for the DC Power Jack.

See if the rest of the DC Power Jack will move around.
ANY perceptible movement means a problem with the DC Power Jack.

The DC Power Jack looks like this not mounted to the motherboard,

http://www.batterystyle.com/compaq-nc6400-jack-p-436629.html

Click on the two views shown of the DC Power Jack.
The view on the left shows the jack from the back.
The view on the right shows the jack from the front. The view you see now.

Note that in both views the jack is shown upside down, in relation to how it actually sits on the motherboard.

The view on the left, (Back view), shows Prongs coming from the jack, that go down through the motherboard, and are then soldered.

The gold colored prong is the Positive prong. It goes to the Center Pin of the jack.
All of the silvery colored Prongs are for Ground, or Negative.

Where the Prongs are soldered to the motherboard, are called solder joints. Each prong has a solder joint.

It may just be that one, or more solder joints are cracked.
This would require disassembling the laptop down to the bare motherboard in your hand, then re -soldering any cracked solder joints.

[ Be SURE to use an ESD wrist strap, and have it's alligator clip connected to a good ground source, BEFORE working inside a laptop ]

It may be however that the DC Power Jack is damaged, and replacement is necessary.

HP Support > HP Compaq NC6400 Notebook PC > Manuals page,

http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual&lang=en&cc=us&docIndexId=64179&taskId=101&prodTypeId=321957&prodSeriesId=1847703

On this page click on - Service and maintenance information

(Under the - Quick jump to manuals by category - heading)

Under the bold - Service and maintenance information - heading, click on -
HP Compaq NC6400 Notebook PC Maintenance and Service Guide
(24 Apr 2007 / 4.61MB )

[ This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.

After you click on the above file name, it may take up to 30 seconds, before the first page comes up ]

Need guidance in de-soldering, and removing the old DC Power Jack, and soldering in a new one?
Post in a Comment.

If the DC Power Jack checks out, you have a bad power correcting chipset. This is a type of Power MOSFET.
Motherboard replacement is the solution.

Regards,
joecoolvette

Apr 25, 2012 | HP Compaq nc6400 Notebook

1 Answer

Acer 5570z no lites will not power on


Knowing that the new AC adapter (power supply), is putting out 19 to 20.5 Volts (DC), then the problem needs to be diagnosed further.

[ AC adapter is checked with multimeter. Function knob set to DC Voltage. (Dotted line over a solid line) Center hole in plug for AC adapter, that goes to laptop, is the Positive connection. (Red probe lead of multimeter touches)

Outside metal shell of plug is Negative. (Black probe lead of multimeter touches) An economical multimeter can be purchased for around $5 to $12. A multitude of stores carry them. An auto parts store is but one example. Analog, or digital is fine]

The jack in the laptop, that the plug for the AC adapter (power supply), plugs into, is the DC Power Jack.

With many DC Power Jack's, the jack is soldered directly to the motherboard.

Not so with the Acer Aspire 5570z series of Notebook PC's.
The DC Power Jack is connected to a cable of wires, which in turn is connected to the motherboard.
DC Power Jack Harness.

Replacement, is disassembling the laptop down to the DC Power Jack harness, unplugging it's cable's connector, and plugging in a new DC Power Jack harness.

The Bottom Case holds the DC Power Jack in place. (There is a slot in the side of the case it sits in)

Battery removed use an object to see if you can wiggle the Center Pin around. (Pencil? Or C-a-r-e-f-u-l-l-y, a flat tip Jewelers screwdriver? )

Also see if the rest of the DC Power jack, that you can see, will move around.

A-N-Y perceptible movement means a problem with the DC Power Jack.
It would also be best to go further, disassemble down, and remove the DC Power Jack Harness, even if no movement is found.

Perform a Continuity Check with a multimeter. Check each wire in the harness to make sure they are good.


No problem found with the DC Power Jack?
Then the problem is a power sensor chipset, or chipsets, on the motherboard. This part of the laptop IS the power supply.
The AC adapter is just part of the power supply.

If this is found to be the problem, motherboard replacement is the viable solution.

[ Chip and Chipset are slang terms to denote I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit

The power supply (Sensor chipset/s) senses whether the Battery needs a charge. Full or just trickle. It also senses when the laptop is to just run off of the AC adapter, and not the Battery, or Battery, and not the AC adapter.
{Plus a few other functions}

Here is the link to the Service Manual, (Free), for the Acer Aspire 5570 series of Notebook PC's,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer

Go to the second Aspire heading. The one that begins with Aspire 1200
Go down to the 8th line, and across to 5570. Left-click on 5570
This is a PDF file. May take up to 30 seconds after you click, before the first page comes up.

1) Use an ESD wrist strap. Connect it's alligator clip to a good ground source. (Electro Static Discharge. I connect to an unpainted surface, of the metal frame of an open empty desktop computer case)

Average cost is around $3 to $6.
One example of an ESD wrist strap,

http://www.radioshack.com/product/index.jsp?productId=2103245

2) Use a multi-compartment container for the various screws you will remove.
Label each compartment for the area the screw/s come out of.
If no multi-compartment container is available, substitute with a clean egg carton.
Label each egg holder.
(Or double-sided tape, and label the tape)

There are screws which look VERY similar to others.
Do NOT mix them up.

3) Make a record as you disassemble. Make notes, drawings, and use a digital camera, or video cam, with good lighting.

Nice to have a record to refer back to, in case you are interrupted.
Also nice to have a Personal record made by you, along with the Service Manual

Plus,

http://www.youtube.com/watch?v=CI_PC4IPznQ


For additional questions please post in a Comment.

Regards,
joecoolvette

Nov 27, 2011 | Acer Aspire 5500 5570-2609 Laptop

1 Answer

My 4520 Acer Laptop will not charge and will not work on AC power alone.......


You First need to test your AC Adapter Cord...
You can test if you have a secondary known working one.. plug that one in to see if same issue occurs.. OR you will need to test the AC Adapter using a multimeter (available at any home improvement store for under $7).. When testing the Plug End on the AC Adapter - Hold The Negative Test Prod Of the Multimeter to the Outer Side Of the Plug Tip, and Put The Positive(red) Test Prod Inside The Plug Tip... See If You Have Power Through The AC Adapter Tip... You Might Need To Slightly Wiggle The Cord Near The Tip End To See If THere Is A Short In The Cord....

If Cord Tests Good....

You Will Need To Replace The Laptops DC Jack...
The DC Jack is the port where your AC Adapter Plugs into on the laptop..

Your Faulty DC Jack Would Need to be desoldered, the motherboard cleaned of all old flux, Re-Tin The Contact Pads and then Resolder a New DC Jack Onto The Motherboard...

Nov 16, 2009 | Acer Aspire 4520-5582 Notebook

1 Answer

Power cord attachment into the back of computer seems worn, it wants to run off battery instead of recharging through power supply


Either Have A Failing AC Adapter, Or A Failing DC Jack
you can test the AC Adapter using a multimeter (available at any home improvement center for $6)..
The DC Jack Would Need To Physically Be Checked To See If It's Faulty... which would intail removal of all parts down to the motherboard and visually inspect the DC Jack (the port where the Charger Cord Plugs into)



Remove The Battery... Plug AC Adapter Into Laptop.. Attempt To Power On....

Nov 15, 2009 | Acer Aspire 5100 Notebook

1 Answer

Can I use ther Targus Adaptor for Inspiron 1525


On the long term, a power adapter with a bigger amperage can damage battery and battery charger.

Better to get an adapter with same specs as the 65/70W one , or an original replacemant:

Dell Inspiron 1525 New AC Power Adapter Supply $14.29 - Buy.com Dell Inspiron 1525 65 Watt Original AC Adapter $25.00 - parts4nb.com Dell Inspiron 1525 Power Cord PA-12 $16.95 - AmeriMax Advance


DELL Inspiron 1525 DC Power Laptop Adapter ... £25.23 - B2C Shopping UK DELL Inspiron 1525 Laptop AC Adapter power adapter £38.99 - Very Good Battery Dell Inspiron 1525 Ac Adapter Charger Power ... £16.50 - eBay UK

AU/NZ - DELL INSPIRON 1505 E1405 E1505 AC Adapter Power Supply

Dell : Lind Electronics 70-Watt DC Power Adapter for Dell Inspiron

Apr 22, 2009 | Dell Inspiron 1501 Notebook

1 Answer

No ac power but plugged in


If you plugged in the ac adapter, and you still get no power and cannot turn it on, the first thing to check is the AC adapter. Get a voltage meter, set it to 200 DC, put the positive on the inside and the ground on the outside. Unless you have a highpower alienware laptop, it should read +/- 20 V, most likely 19.xx. If your AC adapter is good, then the DC jack, what the adapter plugs into, is bad. In this case, the laptop will have to be disassembled, the mother boared removed, the old DC jack de-soldered and taken off, and a new DC jack soldered on. You would really need to take it to a qualified techninician at a shop to di it.

Mar 21, 2009 | Acer Aspire 5100-5022 Notebook

3 Answers

Toshiba laptop battery or AC/DC adapter


step 1.First remove the battery out
step 2.Try to plug in the AC/DC adapter and see any Power light or something on your machine. If you have power light on your machine that mean your adaptor is supplying electric.But still there're some adapter that don't really supply a good DC voltage
we need to further check.
step 3: incase no light nothing on your machine you need to use analog meter or digital meter to check that your adapter is giving out DC Volatage around 16-19V
Best of luck, takecare.

Apr 19, 2008 | Toshiba Satellite L25-S119 Notebook

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