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I have a Gateway MT 6452 and it has begun intermittantly charging. It appears there is a fouled up connection at the motherboard and the ac jack. How difficult is it to re-solder and repair the connection?

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It can be done by should only be done by an experienced professional. Not all repair shops will offer to do this repair but it is quite common and typically costs about $120.00 to have done


http://www.fixya.com/repair/d500076-jeff_bosset

Posted on Nov 15, 2009

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1 Answer

Why won't my gateway MD78 power on?


Here below are possible causes and troubleshooting steps of laptop that can't power on, hope it may help:
Possible causes:

1. AC adapter failure.
2. Power jack failure.
3. Motherboard failure.

Possible troubleshooting steps and repair solutions:
1. Test the AC adapter with a digital multimeter. It's possible that you have a failed AC adapter. If you don't have a multimeter, test your laptop with another known good AC adapter.

2.It's possible that power jack (socket where you plug the AC adapter) is broken. Remove the motherboard and take a closer look at the power jack. In some cases you can fix the jack by resoldering it on the motherboard. In other cases you have to replace the jack with a new one. Using a multimeter, test if the power goes to the motherboard through the jack.

3. If replacing the AC power adapter and jack on the motherboard doesn't help, most likely you have a bad motherboard. Replace the motherboard.

Replacement Gateway MD78 AC Adapter 65Watt 19V 3.42A Option

Replacement Gateway MD78 MD7800 AC Adapter 90Watt 19V 4.74A

Nov 29, 2012 | Gateway Computers & Internet

1 Answer

Gateway nv59c shuts off when picked up


On battery or AC? I would suspect a loose connection, AC cord, AC jack. Has it been damaged, dropped, banged, jarred, etc. Obviously something is loose/broken causing intermittent loss in the power circuit. If you have a multimeter you can troubleshoot the issue from AC outlet to AC jack, then you have to open the laptop or take it to a qualified computer tech. Is the laptop under warranty? If so Get in touch with Gateway at once, to repair/replace. Don't delay.

Nov 19, 2012 | Computers & Internet

1 Answer

GATEWAY 4024 WONT POWER ON


Remove battery and try again, if no! the DC jack in the laptop is a common problem from no power to intermittent power. The Laptop will need to be dismantled down to the motherboard level to address the DC jack, chances are it has bad connections on the flip side of the board where the plug is.

Apr 29, 2012 | Gateway 4024GZ Notebook

1 Answer

No power


You apparently have visually checked the DC Power Jack, but also perform a continuity check of the jack, if you have not done so.

The DC Power Jack connections are the Center Pin, which is the Positive connection, and the outside metal cylindrical shell, which is the Negative connection.

Multimeter set to Ohms, (Omega symbol. If more than one setting, set the Function knob to 1K), touch the Positive (Red) probe lead of the multimeter to the center pin.

At the same time, touch the Negative (Black) probe lead of the multimeter, to the outside shell.

The amount of the reading, isn't as important, as getting an actual reading.
No reading on the multimeter means the jack's circuit has a break.

If so this can merely be caused by a cracked solder connection.
The jack's prongs, or pins that go down through the motherboard, are soldered.
If one of these solder connections is cracked, power will not flow through the DC Power Jack.

This is all it takes. One broken/cracked solder joint.

Example of a Gateway MT6804h Notebook PC, DC Power Jack,

http://www.amazon.com/GATEWAY-MT6707-MT6841-MT3705-MT6840/dp/B0040FO6CO

Click on the main photo to enlarge.

{ It appears there isn't a solid metal cylinder, used for the Negative connection in the jack. There are individual segments that are used instead.
Touch the Negative ( Black ) probe to any of them }

After you click on the main photo, and it enlarges into a separate small window, there are 5 smaller views shown at the top right, in the small window as an option.

I would like you to click on the Bottom/Left view.
This enlarged view shows the DC Power Jack upside down, and the back is facing you.

Note how in the center of the back of the jack, there is a long prong, or pin, sticking up.

This prong connects to the Center Pin of the jack, and is the jack's Positive connection to the motherboard.

The prong, or pin, in front of it, and located more towards the center of the jack, is the Negative connection to the motherboard.

These solder joints MUST be in good shape, and not cracked.

[ The outer metal case of the jack has four 'prongs' that stick up, also.
Two for each side. These are used to mount the jack to the motherboard, (Soldered). ]

Continuity check is OK, and solder joints?
Problem is a power sensor chipset on the motherboard.

To digress;
A) Chip and Chipset are slang terms for I.C.
Integrated Circuit,

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

B) The power sensor chipset is a chipset that senses;

1) When the Battery needs a charge, and if it is to be a trickle charge, or a full charge.

2) When the laptop is to run strictly off of the AC adapter, OR the Battery.

To go on;
This is one example of a power sensor chipset used in a lot of laptops,

https://docs.google.com/viewer?a=v&q=cache:oER5NNz8cwcJ:www.fairchildsemi.com/ds/FD/FDS6675BZ.pdf+Fairchild+FDS6675BZ&hl=en&pid=bl&srcid=ADGEEShOhWPjm_M-ROHme4iEMrztCTOd-28jNiy1hVLQQh_VOyv8zcXEVDB_iTQA6MuZO88UmRkDgjyW9j4CP2aIJ-4DS-h6JNM3lvxldeApQeecmz_DADCw1s7tmNLxfPknqX14SZP6&sig=AHIEtbS_rYUAeo_8rB9YHkW05ZjLqeH4Jg

Note the 8 prongs. 4 on each side.
The 'foot' of the prong is soldered to the motherboard.

[ MOSFET,

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

Power MOSFET,

http://en.wikipedia.org/wiki/Power_MOSFET ]

With good to excellent soldering/de-soldering skills, this chipset can be replaced.
Otherwise the solution is to replace the motherboard.

(Do I also assume you used a multimeter, to check the output of the AC adapter?
19 Volts DC )

Post back in a Comment.

Regards,
joecoolvette

Jan 28, 2012 | Gateway MT6840h PC Notebook

1 Answer

Gateway kav60 not charging. i have to wiggle the cord and sometimes it refuses to charge.


I guess you've got a broken laptop power dc jack or power cable.


Symptoms of a broken Laptop DC power jack:


- The laptop only operates when you hold the DC power plug in a certain direction (DC jack is broken or loose).
- The laptop only runs on battery power (no power is getting through the DC jack).
- The laptop gets no power at all.
- The laptop will not charge the battery.
- The laptop switches from AC power to battery power intermittently due to a loose or broken power jack.
- The laptop suddenly shuts off.
- The DC jack may feel loose.
- Sparks come out of the back of the laptop when you insert the power plug into the DC jack.

Apr 21, 2011 | Lifetime Gateway KAV60 Replacement Laptop...

3 Answers

Advent N270 netbook will not charge. Orange light comes on initially then goes off. Also when I wiggle the plug into the laptop the light flashes on and intermittently.


It sounds like either a bad connection on the motherboard or a broken wire in the adapter making intermittent connection.

1. With the power adapter disconnected, do you have a power light? This would indicate the adapter is good and the plug is questionable.

2. Check your power adapter output with a multi-meter.(be sure to wiggle the wires around) If the power fluctuates, replace the plug.

3. If the power is solid, replace the motherboard connector.

Nov 22, 2010 | Intel Computers & Internet

1 Answer

Laptop won't power on with ac adapter or battery


Could be a combination of things.

1) Battery is low. Not enough power to turn the laptop on.
Caused by;

2) AC adapter has a plug on the end of the cable. The plug plugs into a DC Power Jack on the laptop.

The DC Power Jack is bad.

2a) The DC Power Jack has a bad connection to the motherboard, (Cracked solder joints), and/or the jack itself is bad.

2b) Center Pin is loose in the jack's mount.
The back of the Center Pin where it mounts has become loose.

2c) The plastic body of the jack, which composes the jack's case, is cracked. This allows movement of the Center Pin.

2b, and 2c cause a bad connection with the AC adapter plug.

No charge to the Battery, no power to the laptop.

http://www.laptopjacks.com/view_part/For-Gateway-MX6920-DC-Power-Jack-GW51425.html

[ If this is the case the DC Power Jack needs to be resoldered to the motherboard. The cracked solder joints need to be re-melted, (Reflowed)
Entire laptop needs to be disassembled down to the bare motherboard in your hand.
(No Processor, Ram Memory, or any adapter cards mounted to the motherboard. Nada)

OR,
The DC Power jack needs to be replaced.
This entails disassembling the entire laptop, down to just the motherboard in your hand. (Same as above)

The old DC Power Jack is de-soldered, and a new one soldered in place.

Very FEW computer repair shops have the necessary skill level.
They just want to replace the entire motherboard.
IF one is available.
More Ka-Ching for them also. ]

3) The AC adapter is bad.
Not providing power to the laptop, to charge the Battery, nor give power to the laptop without the Battery.

AC adapter cord from adapter to plug, which plugs into the laptop, (DC Power Jack), may have a break in it.

May be an intermittent contact provided by wiggling the cord.
If this is the case the wires have stretched, and broken.
Wiggling causes the wires to briefly touch, and make contact.

Where this cord meets the plug itself. A lot of times there is a break in the wires in this area.

Solution is to replace the AC adapter. There are universal AC adapters you can buy, or perhaps Gateway still has some for sale.
(Ka-Ching)

Oct 21, 2010 | Gateway MX6920 Notebook

1 Answer

I just replaced my ac adapter for my gateway lap top mx 6931 thinking that was the problem for why my screen flickers when i plug my ac adpater in to charge my battery. The battery wont charge unless i...


Chances are the power jack in the laptop that is to blame. It's common for the solder connections holding the jack to the motherboard to break because of the power plug flexing. One way to check is to keep the laptop steady and wiggle the power plug. If the power indicator flickers, that's what's wrong.

The good news is that this is usually repairable. The bad news is that not all service shops are willing to get into this level of repair. The motherboard needs to be removed from the computer so the connections can be repaired. Sometimes the board needs some mechanical repair as well, and occasionally the only way to fix the trouble is to replace the board. Most shops want to replace the motherboard right off.

Call around to shops in your area and see who's willing to try soldering the board. That is usually all that's needed to get you going again.

Feb 02, 2010 | Gateway MX6931 Notebook

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

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