Question about Acer TravelMate 630XCi (91.43U01.BA5) PC Notebook

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Can not come on

Dc power on

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Re: can not come on

Remove battery, try again with just AC no battery installed. also try with no battery, hold down power button while plugging in.

Posted on Oct 03, 2007

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Will not power on

When you connect the power, does the charge light lit up? this would tell you the power is transmitted to the battery, wich would mean your DC-jack (where the power goes in) is fine, and the problem might be fixed by:
  1. removing the battery,
  2. remove the power,
  3. hold powerbutton for 20 secs,
  4. re-insert power jack(not battery)
  5. press power on button.

If that didnt work, try the following to determine the DC-jack is the problem:
  1. remove battery
  2. insert power into dc-jack
  3. gently press the power plug into various directions while constantly pressing and releasing the power button.
  4. at some point the laptop should respond by turning on, meaning that you have a faulty dc-jack, which needs re-soldering or even relacement by soldering to repair.

Maybe you also notice that the power connector is very loose in the dc-jack, this might tell you that the dc-jack is the problem..

hope it helps..

Oct 15, 2013 | Gateway MX6956 Notebook

1 Answer

Label parts motherboard

1) AC adapter (Charger) checks to be good?

2) DC Power Jack checks to be good?
The jack on the laptop that the AC adapter plugs into)

3) Then the problem is more than likely the Power MOSFET's on the motherboard.
May also include electronic components, that support the P.MOSFET's, too.

Multi-Layer Ceramic Capacitors (MLCC), that are SMD/SMT, just like the Power MOSFET's.
(Surface Mount Device/Surface Mount Technology)

Using the HP Pavilion dv6000, and Pavilion dv9000, series of Notebook PC's for an example,

For these laptops the Fairchild Semiconductor Industries - FDS6679 - Power MOSFET is used, and the Alpha & Omega Semiconductor LTD - AO4407 - Power MOSFET, is used.

Where the DC Power Jack is soldered to the motherboard, is the DC - DC circuit on the motherboard.
If the laptop uses a DC Power Harness, the DC to DC circuit is where the DC Power Harness plugs into the motherboard.

[Some models of laptops have a DC Power Jack, that has a small harness of wires coming off of it.
These wires end in a small male plug connector. The male plug connector plugs into the motherboard.
DC Power Harness ]


May 16, 2013 | IBM ThinkPad PC Laptops

1 Answer

Dc plug laptop

DC Power Jack


If the DC Power Jack is connected to wires, and the wires end in a male plug, the DC Power Jack is now called a DC Power Harness.

What about it? Need to replace it?

Post the laptop manufacturer name, and model number.
The model number can be found on the Bottom of the laptop.

Post back in a Comment.


Mar 07, 2013 | PC Laptops

1 Answer

Broken power plugin port

The power plug in port you refer to is the DC Power Jack.

The AC adapter (Charger) converts AC electricity into DC electricity.
DC electricity has two poles. Positive, and Negative.
(Just like on a D cell flashlight battery)

The center pin of the DC Power Jack is the Positive connection.
The outer metal spring-like pieces, on the inside of the cylindrical shape surrounding the center pin, are the Negative connection.
(The pieces of spring-like metal, all connect to the Negative connection in the DC Power Jack)

Example of a replacement DC Power Jack, for the Asus Eee PC 1005HA Netbook,

[ Note*
Cannot agree with the replacement instructions they offer, at the bottom of the page.
Not everyone has access to a hot-air gun. A 25 Watt soldering iron, and Desoldering Braid, is better, and more easily accessed ]

A few articles dealing with replacement of a DC Power Jack,

1) Remove ALL power. Remove the AC adapter, (Charger), and Battery.
2) Observe Anti-Static Precautions. Buy, and use an ESD wrist strap.
Electro Static Discharge.

(Average cost is from $3 to $6. Connect the alligator clip to a good ground source.
I connect to an unpainted surface, of the metal frame of an open, empty desktop computer case.

If you wish to proceed in replacing your DC Power Jack, and need guidance, post back in a Comment.


Dec 01, 2011 | ASUS Eee PC 1005HA-PU1X-BK Netbook

1 Answer

My Q430's power connection is loose and not changing battery. Do I have to swap out motherboard?

The DC Power Jack is the jack you plug the AC adapter (Charger) into. (DC_IN)
The DC Power Jack for the Samsung Q430 series of Notebook PC's, consists of a;
1) DC Power Jack, which is connected to two wires.
2) The wires end in a small male plug connector.
It is now a DC Power Harness,
FOLLOWING Anti-Static Procedures, the laptop is disassembled far enough to unplug the DC Power Harness, and plug a new one in.

Sep 10, 2011 | Samsung Q430 Laptop

4 Answers

Hello my laptop t41 power is not even flash but the adapter is working,am technician and i have troubleshoot allot.

I concur with what Diegotech stated.

To iterate further;

1) The DC Power Jack (DC IN), may have cracked solder joint/s on the motherboard connector, (Female), where the DC Power Jack plugs in.


2) The DC Power Jack may be broken.
Center Pin mount, and/or body of DC Power Jack, and/or Outer Shell mount.

Replace DC Power Jack.

3) Wires from the DC Power jack plug to the female connector on the motherboard, may be bad.

Replace DC Power Jack.

Two examples, of a place to buy an IBM ThinkPad T41 DC Power Jack,



Past this point it's a bad DC sensor on the motherboard.

Replace motherboard.

IBM ThinkPad T41 Service Manual, (Free),

On this page go down to the 8th line.
The one that starts with > ThinkPad T20.

Go across, and click on > T41

Takes approximately 2 seconds to see the first page, and additional time to fully download.

Page 142 for 14.1 inch LCD screen
Page 151 for 15 inch LCD screen

(PDF file page number box at top)

Dec 01, 2010 | IBM ThinkPad T41 Notebook

2 Answers

Where i can buy, power socket for my amilo pro v2010?

Just one example,

The power socket in the laptop that the AC adapter (Charger) plugs into is a DC Power Jack.

Type Amilio Pro V2010 DC Power Jack in your browser search bar, press the Enter key.

To add:

Nov 07, 2010 | Fujitsu Siemens AMILO Pro V2010 Notebook

5 Answers


Motherboard or harddrive? I'm betting it's more towards the motherboard. The DC Power Jack to be more specific. This is the port where the AC adapter, (Charger), plug is plugged into.

The DC Power Jack is not much bigger, than the plug for the AC adapter that plugs into it. There are small pin leads that are on the bottom of this jack, and they go through the motherboard, and are soldered to the motherboard.

Accidental bumping of the AC adapter plug, while plugged into the DC Power Jack, can damage the jack. It can break the connections for the adapter plug, and/or can crack the solder joints for those small pin leads.

[Laptops use DC electricity. A flashlight battery, and a laptop battery, are examples of stored DC electricity. DC electricity has two poles. Positive and Negative. The DC Power Jack has two connections. Positive and Negative. {Even if the DC Power Jack has multiple holes in it]

There is also another known problem associated with DC Power Jacks. It may stem from a bad motherboard design.

More to the point, the area where the DC Power Jack mounts on the motherboard. In this design, the DC Power Jack motherboard area, is almost a separate part of the motherboard. It's shaped like a Peninsula. (Think of an island, with one side connected to the mainland)

This peninsula shape, has the tendency to crack away from the main body of the motherboard. Circuit traces are broken.

When the AC adapter plug is setting in a certain position, it presses the two broken halves of the circuit traces together, for a momentary contact. As the AC adapter plug is moved from this position, the circuit trace halves are moved apart, and there is no contact.

(No distribution of electricity from one circuit trace half, to the other circuit trace half. Think of a circuit trace as a very, thin, flat copper wire. When a circuit trace is broken, there is essentially a wire that is broken into two parts)

See if the DC Power Jack can be repaired, (Solder joint connections re-soldered), or replaced.
If the DC Power Jack motherboard area is the aforementioned peninsula shape, it may require replacement of the motherboard.

There are very FEW, computer repair shops that have the technical expertise to replace a DC Power Jack. Easy fix is to simply replace the motherboard. (More $$$$$ too)

However, some laptops DO require replacement of the motherboard for this repair.
Bad motherboard design, for the DC Power Jack area on the motherboard.

Re-solder DC Power Jack solder joints? (IF, this is the problem) Average is $50 to $75 (US)
Replace DC Power Jack? Average is $125 to $150. (US)
Replace motherboard? Depends on the Gateway model. Could be $225 to $400 (US)

[Yes, most of the time the cost warrants just replacing the laptop itself, as the cost of replacing, is close to the repair cost)

Just to SHOW you ab average DC Power Jack, and the repair involved of replacing. (Doesn't show you, that the entire laptop needs to be disassembled, down to the bare motherboard in hand)

This is NOT a recommendation to replace the DC Power Jack yourself! It is just for knowledge of what is partially involved. (You can accidentally burn the motherboard when desoldering, or soldering, rendering the motherboard useless)

Sep 09, 2009 | PC Laptops

3 Answers

Intermittent dc jack connection for Gateway mx3215

Here is how to disassemble Gateway laptop,

Here is replacement DC socket (needs soldering),

Here is DC board (no need soldering, but expensive).

Hope this helps.

Mar 17, 2009 | Gateway MX3215 Notebook

1 Answer

Wont recognise battery

Those may have 1 or 2 different problems. Cold Solder joint on Mobo. Bad DC Power Jack. 1: if it is the Cold Solder, you can reflow the solder and be done with it. 2: if it is the DC power jack, It should be replaced. For simplicity lets call them DC(A) and DC(B) There are 3 connections to it. Gnd, DC (A), and DC (B). When the powersupply is plugged in, contacts (A) touch to send +DC to the laptop. (B) is open. When the laptop is using battery power, contacts (B) touch to send power from the battery through the system. Over a period of time (inserting and removing the DC Power Cord), the contacts become fatigued, or oxidized and the DC(B) never closes - so it won't work from DC Battery. RATE ME - if it helps

Nov 26, 2006 | Compaq Refurbished Notebooks: Armada M700...

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