Question about Toshiba Satellite 2805-S603 Notebook

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When ac is plugged in the power light blink & notebook unresponsive

My ac post broke and i currently have the adapter spliced and soldered to the board.. but even before i Frankenstein'ed it in this fashion... the power light blink & notebook unresponsive when the ac is plugged in. it also wont charge my battery. when ac is not live.. the notebook works using battry power, but being the battery is LOW it shuts down after a few seconds. and plugging in ac causes it to overide battery power and shut down.
??????????????????????? HELP ME PLEASE...

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Sounds like your ac adapter (brick) is bad and not supplying correct voltage/amperage.

Posted on Apr 03, 2008

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Contact Service Center.

Posted on Apr 03, 2008

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Amilio laptop not charging in spite of new charger


please measure the output for your charger,normally they have 19.5 vdc exactly, if they do not measure the adapter is faulty, repair or replace.If the output is o.k the battery can be faulty. Use the software diagnostic coming with the computer, restart the computer HOLD the key f2 or esc depending of your computer model, and make the diagnostic.try again and see what is the result, if the battery is o.k or faulty.God bless you

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I have acer aspire 5334. AC adapter plugged in but won't charge. Lights not showing on laptop and battery icon not showing its plugged in. Adapter rectangle box led light is on!! Is it charger, battery or...


You need to get the DC Power Jack Either Repaired or replaced...this is the "female" port where your AC Power cord plugs into.. To Repair the current DC Jack...First you'll need to look closely at the Positive posts to see that they are not broken.. If visibally ok.. then you can look at the Solder Connections.. they will need to first be Desoldered.. Cleaned, then Resoldered back in place.

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Why my pc presario x1000 power and lamp lights blink and the batteries can not be on my pc


I fix these laptops as a side business and sell refurbished ones on ebay...I've seen the problem you describe but I'd need to know more about how fast they are blinking, etc. When all the lights flash about 2-3 times per second, I've found it to be a motherboard issue normally caused by a faulty power jack. That can be fixed but it means disassembling the complete laptop down to the motherboard and either re-soldering or replacing the jack. If you have access to a charged battery, disconnect the AC adapter and try to get it to boot cleanly from the battery. This will tell you if the problem is at the jack or someplace else. Post your results and we'll go from here.

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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

Dim green light on power supply blinking


If the Power supply LED dims and flickers its either your motherboard circuit has been cut or there is a short in the laptop. The AC adapter is not the cause.

Try this:
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If that doesn't work, then it's most likely the motherboard.

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Let me know if you need more help,
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I need help with power problem


You are correct about the DC plug on the 1100, they are well known for the problem you posted. It could be one of two things, the solder points where the DC jack is soldered to the motherboard could have "cold solder joints" and re flowing the solder will fix it. Or the DC jack itself is faulty (the more common issue with these Inspirons) in which case almost all PC service shops will insist that the Mother Board has to be replaced (Not worth replacing), but you can obtain the jack for a reasonable fee and either replace it yourself (if you are very good at desodering and soldering, It's surface mounted, and not through hole which through hole is a lot easier to do), or open the laptop remove the Mother Board and take it in to a reputable electronics shop and have them use their state of the art equipment to replace the faulty jack for a reasonable fee.
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