Question about Motherboards

1 Answer

Satellite pro 4300 series

Hi, I am in the position of having satellite 4300 with completely broken dc jack..can of course get new part but how easy/hard is it to refit?..take it the pins are soldered it possible to bypass jack or do I have to brush up on my desolering/soldering skills?/ Thanks..Mike

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,019 Answers

Hi Mike,
Not the simplist of tasks. especially on a laptop.
it,s a complete disasembly of the laptop itself, right down to barebones. the jacks themselves are very well soldered to the boards. usually 2-4 pins. i,ve done a couple myself on vaios.
i,d suggest a good quality desolder pump. and a small roll of soder-wick. be very carefull not to overheat any of the pins. and gentle pressure when lifting away the old one from the board. as you can bend/warp the motherboard. use a good quality solder and a small amount of flux, to resolder the joints. you seem a competant guy, and you should,nt have many problems.
Good luck.
Mike @ Compurepair.

Posted on Apr 17, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I want diagram of acer extensa 2300 for trouble shooting

No power in it?

Meaning you are reading with a multimeter set to DC Voltage, and power IS at the DC Power Jack? (DC_IN)

You, of course, have checked the Voltage coming out of the AC adapter, (Charger), and have verified it is putting out the correct voltage?

19 Volts DC.

Then suggest you have a bad Power MOSFET, or two.
Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's, for an example,

As you can see the Power MOSFET's in question, will be close to where the DC Power Jack is attached to the motherboard.


Mar 13, 2013 | Intel Motherboards

1 Answer

Dv6000 power light does not come on any more





A) Of course check the output of the AC adapter (Charger), FIRST.
You're looking for 18.5 Volts (DC) at the output plug of the AC adapter.

[Center hole of plug is Positive. Outer cylindrical metal shell is the Negative connection ]

B) Next check the DC Power Jack. (The jack on the laptop where the AC adapter plugs into)

With the Battery removed, see if you can wiggle the center pin of the jack.

Any perceptible movement means a problem with the DC Power Jack.
Fortunately the DC Power Jack for this series of Notebook PC's, has a DC Power Jack Harness. The jack is mounted to a small removable circuit board, that has a wiring harness attached to it, and the harness plugs into the motherboard. No soldering required,

AC adapter checks out, DC Power Jack checks out, check the two Power MOSFET's listed at the start of this solution.
[FDS6679 and AO4407]



Now let's talk. See how the FDS6679 and AO4407 use the D2PAK surface mount?

They use J-leads for connection. The J shaped flat leads that come out of the body of the P.MOSFET. In the above example there are two.
The left view shows a Top view, the right view shows a Bottom view.

Talk about easy to unsolder, and solder.
Just make sure when installing the new one/s you use a Clip Heatsink on each J-lead, as you solder each J-lead to the motherboard.

Use Desoldering Braid, (Solder Wick), to remove solder.
Desoldering Tool, (Solder S-ucker tool), is for the birds.

To conclude:

1) Bad AC adapter - You replace

2) Bad DC Power Jack Harness -

You replace?
FOUR DOLLARS AND FIFTY CENTS, plus shipping, and tax.

$100 to $125

3) Bad Power MOSFET -

You replace?
Cost of .032 Rosin core solder, rosin flux, small flux brush, 25 Watt soldering iron with No.2 chisel tip, Desoldering Braid, and P.MOSFET/s.

It's One Dollar and 1 cent, for a FDS6679 from Mouser, plus shipping, and tax.

It's about $70 to $150 for a motherboard, depending on where you buy it.
And that isn't including the $125, or so for labor.

(Very few real techs left. Instead of diagnosing, and replacing those cheap P.MOSFET's, they would rather sell you a motherboard.
Easier for ***** in a repair shop with little to no skills, and also more coins, $$$$$$$)

That's my summer vacation, and now back to you David............

For additional questions please post in a Comment.

Aug 23, 2012 | HP Pavilion dv6000 Motherboard

1 Answer

My DC jack broke what should i do.

I am assuming you mean the DC jack on the motherboard in your laptop?
You can repair it yourself, or take it to a repair shop and pay to have someone do it.
To repair it yourself, you'll need:
1) A new DC jack (though sometimes you can fix the broken one)
2) The disassembly guide to your specific model of laptop. Google the phrase "laptop make/model disassembly" and one should come up pretty quickly. Guides are generally step-by-step with pictures included, and putting it back together is just the reverse of disassembly.
3) A soldering iron and solder. 15-30 watts for delicated boards like a motherboard. Once you've pulled your motherboard out, You can de-solder the broken DC jack from the motherboard (if necessary) and solder the new one on. DC jacks are generally 2-4 solder points and fairly simple to press back on.

May 26, 2011 | Motherboards

1 Answer

My toshiba satellite l35 wont turn on,,,the light blinks then shuts off ,,,thats all it does

You may have a DC connector problem:

Symptoms of a broken power jack
1. If you wiggle the power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker.
2. Battery will not charge in the laptop.
3. Laptop runs fine off a charged battery.
4. With the AC Adapter connected the laptop appears to be dead.
No power LED or battery charge LED activity.
5. Laptop randomly powers off without any warning.

If your laptop is out of warranty, then you can fix the problem by re-soldering DC-IN jack on the system board. If it

May 17, 2011 | Motherboards

1 Answer

Toshiba plug-in ac adapter LCDlight flashing and wont boot up

It may be that you need a new, (Or good condition used), motherboard. You may not.

The problem could be the DC Power Jack. The DC Power Jack is small, and the body is made of plastic. Sometimes there is a metal shell around the plastic body. (The jack is a rectangular shape, and is just a little larger, than the outside portion of that AC adapter plug!)

This is an example of a DC Power jack for a Toshiba Satellite a215-s5807,

As you know there is a metal pin in the center, and at the back of the round hole, there are flat metal contacts.

Let me explain the construction of a DC Power Jack, and how it's mounted to a motherboard. This all has relevance to the solution.

Your laptop uses DC electricity. (The AC adapter converts AC to DC. Your laptop battery, and a flashlight battery, are examples of stored DC electricity)

DC uses a Positive connection, and a Negative connection. The metal pin in the center is Positive. The flat metal strips at the back are Negative.

That laptop DC Power Jack has metal prongs, that come out of the plastic body. One prong, (Or pin), connects to the Positive metal round pin, in the center of the jack.
There may be one, or two prongs, (Or pins), that come out of the plastic body, and connect to the Negative side of the jack. (Flat metal strips)
These prongs go down through holes in the motherboard, and are soldered on.

With the AC adapter plugged in, an accidental bump on the plug itself, could break the body of the jack, or break solder joints that hold the jack to the motherboard.

AC adapter removed, and battery removed. Use a NON-metallic object, and see if you can make the center pin of the jack move. See if the entire jack itself seems to move.
A.If the center pin moves, you have a broken DC Power Jack.
B.If the entire jack moves, you have cracked solder joints. (Broken)

Replacement of the DC Power Jack for A.
Re-solder the solder joint/s for B.

Cost of replacing a jack at a reputable computer repair shop? $90 to $150
Cost of re-soldering solder joints? $50 to $90
Cost of replacing the motherboard?
$250 on up.

If you are a skilled person with the correct tools, it is feasible for you to replace the jack, or re-solder the solder joints.
It is also feasible that you yourself, could replace the motherboard.

Some laptops have a poor motherboard design, for where the DC Power Jack is mounted to the motherboard.

Crude explanation would be, that the main body of the motherboard is a 1 foot square. Then a 2 inch square comes out of the side of the main body.
The DC Power Jack is mounted to that 2 inch square. From accidental bumping, OR just normal usage of inserting, and removing the AC adapter plug, this 2 inch square can crack away from the main body.
This, of course would require a motherboard replacement.

Disassembly instructions for a Satellite A200 and A205 Series laptops. Very close to the A215 Series,

(Don't forget to buy, and use a cheap ESD wrist strap, to prevent static shock to the delicate hardware components, inside your laptop. Average cost is $7)

Aug 04, 2009 | Motherboards

1 Answer

Motherboard issue

It's a power issue. The battery is flat. (No charge present) The AC adapter (Charger) is plugged in. The DC Power Jack has an intermittent contact. (The DC Power Jack is where the AC adapter plugs in. The charger)

The DC Power Jack is broken itself, or where it's soldered onto the motherboard, the solder joint/s are broken. This gives an intermittent contact. To see if this is the issue, try holding the plug for the charger over to one side, when it's plugged into the laptop. You may have to move it side to side, or up an down, to see.

If this is the issue, the DC Power jack costs about $6 bucks. The cost to replace it is $120 to $150.

The tech has to completely disassemble the laptop, until just the motherboard is in hand. The old DC Power Jack is unsoldered, and a new one is soldered in. Then the laptop is reassembled.

IF, you can find a shop! Most of the time the entire motherboard is changed out. Now you're talking Ducketts! $$$$$$$

Dec 23, 2008 | HP (D7580-60003) Motherboard

1 Answer

Toshiba dc connector


If the laptop still works, then there would be no need to replace the motherboard. The DC jack is replaceable/repairable. What would be more challenging is the disassembly and eventual exposing of the bottom part of the circuitry where the DC jack is soldered into. Often the DC jack would have at least 2 solder point (not more than 3). This might interest you.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Oct 25, 2008 | Toshiba Satellite (K000004080) Motherboard

1 Answer

Easynote r1935

Chances are the notebooks adapter is broken. Take a look at this link & it will show & explain how to repair the jack.

Please read everything on the link.
If this is too tough to fix you're self. I suggest you take it to a pro. At least you'll all ready know what needs fixed.

Good Luck!


Jul 11, 2008 | Packard Bell (181379) Motherboard

1 Answer

Toshiba satelite pro

could be a number of things. a bad solder point for the dc jack on your main board, a fried power supply. or even blown capacitors on the main board. UI would suggest replaceing the ac adapter first. if that doesnt work. you will need to open up the machine and do some testing. I have seen the same problem as a result of a faulty solder point on a dc jack of a toshiba satellite l35a. they use the same jack so could be the same problem. if you want it looked at let me know.
Owner,Founder,Head technician
Leading Edge Computers LLC

Apr 29, 2008 | Motherboards

1 Answer

Broken DC jack Acer Aspire 3100 series, 3102 laptop

you can look in to

Dec 10, 2007 | Motherboards

Not finding what you are looking for?
Motherboards Logo

Related Topics:

315 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motherboards Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers


Level 3 Expert

5660 Answers

Mark Taylor
Mark Taylor

Level 3 Expert

728 Answers

Are you a Motherboard Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides