Question about Lenovo ThinkPad T61 Notebook

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Computer turns on and off notepad t61

How do i know the dc jack is not working

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Check power adapter’s DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced.
If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Posted on May 04, 2010

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Asus k53e won't turn on


That particular model Asus laptop are susceptible to over heating on the DC power jack and finally creating a short due to the shotty work on the board and or the possible shotty DC power jack. If you computer will not turn on and your battery is probably dead and even plugged in the power light does not come on? Then it is your DC Power Jack on the laptop. So the DC power jack for that model will run you between $0.48-$6 bucks. However if you are a soldiering guru then you can disassemble the laptop and remove and replace it. However, it is not cost effective to let a shop do it, because they will charge you way to much for the job. Honestly, it would be much cheaper and more efficient just to buy yourself another laptop. If you know someone who is savvy enough they can removed your hard drive from your laptop and pull off whatever data you want and move it onto your new laptop.

Oct 26, 2013 | ASUS K53EB1 156Inch Versatile...

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Hi when plug in my ac adapter into lenovo x61 the tablet will not turn on i try it on other computer and it will on what happen?


LOL, sounds like your tablet has seen it's better days. See why HP got out of the Tablet business? They are nothing but trouble.

Apr 08, 2012 | Lenovo Tablets & eReaders

1 Answer

The power light is off The charger is OK with 19Volt The connector is OK and somehow there is a problem with in the power


remove the battery, connect the ac adapter and turn on the laptop. If it turns on then it's your battery. If it doesn't turn on then it is either your ac adapter, your dc jack, or your system board.

If it doesn't turn on then try a different ac adapter from your local pc shop or electronics store. If it still doesn't work then try moving the ac adapter connector and see if it attempts to turn on. If it does then it's your dc jack. If it is your dc jack then you will have to replace it. The problem with that is that it can be pretty expensive to replace it.

The way I have solved this is by ordering a dc jack on ebay or any other online parts supplier and replacing it myself. If you can take your computer apart and put it back together then it's just a matter of desoldering and soldering the new one. If you want you can have a pc or tv shop do the soldering for you.

Have fun and let me know if you have anymore questions.

Dec 14, 2010 | IBM ThinkPad X60 Tablet PC

1 Answer

2 months ago ive bought new charger...cause there was a fault with my previous one. It might also be a socket on laptop, so ive fixed both of it!but in the recent time,something went wrong...my charger...


Turn everything off. Take off the battery. Connect the ac adapter and turn on your computer. If it works with the ac adapter connected and your battery off then you have a defective battery.

If it does not work then it's either your ac adapter or your dc jack inside your computer. Try a different ac adapter at the store you bought the battery and you'll know if your adapter is bad. If it works with another adapter then exchange the adapter again (I know, I know, I've been there). If it does not work with another adapter then you're back to the dc jack but at least you'll know for sure.

Make sure that whoever is replacing the dc jack is good at soldering and replaces it not just solders the same one back on. Don't forget the shield to the dc jack. Good luck!

Oct 16, 2010 | Computers & Internet

1 Answer

Notebook won't power on


Take the battery off and try to turn it on with just the power cord. If it works then it's your battery. If it doesn't then it's either your ac adapter or your dc jack. Try an ac adapter from a local pc shop or electronics shop. AC adapters run around 40 dollars or less if you order them online. DC jacks are a different story. I the jack needs to be replaced you'll have to take it to a pc shop or if you can do it yourself then order a dc jack online or purchase it online and take the computer apart replace the dc jack (you'll have to desolder the old one and solder the new one one). Good luck!

Aug 23, 2010 | HP Compaq nx8220 Notebook

1 Answer

Won't power up


Need to check your AC Adapter to make sure it's supplying power to the laptop... Remove the battery And Attempt to power on Using only the charger cord.. Still no power? Check The DC Jack (port where your AC Adapter plugs into)...
Do you get any lights that turn on when plugged in? Does the Fan Spin?

Nov 15, 2009 | Lenovo ThinkPad T61 Notebook

5 Answers

MY GATEWAY LAPTOP NO LONGER RECEIVES POWER.


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)

Solution?
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)

http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

Sep 09, 2009 | Computers & Internet

2 Answers

Vaio will not turm on


you will most likely need to replace the dc jack, which is the port where your charger plug plugs into...

To test if your dc jack is bad... Remove the Battery, Plug the Power cord into laptop then attempt to power on... If no lights turn on, no fan spins.. your DC jack is bad...
DC Jacks Cost $6 to $10 but you need to find someone experienced to replace it, or you might end up with a dead motherboard as well..

Oct 14, 2008 | Sony VAIO PCG-V505DXP Notebook

1 Answer

Power Jack


Most, if not all computer manufacturers do not include these instructions, & for good reason too. You should not attempt to replace a DC Jack if you are not very technologically savvy.

Repairing the actual DC Jack itself requires you to strip the notebook down to the motherboard. From that point you will need to de-solder the old DC jack (very carefully) and then solder a new DC jack to the motherboard. After those steps are complete, you need to test the power using a voltmeter. If the voltage matches up to that of the computers you can continue. After you have finished all of that the only thing left is to put the notebook back together.

More detailed instructions as well as photos can be found by doing a Google search. Try entering the make and model of your specific notebook.. Who knows, you may get lucky and find a link with how-to photos.

Mar 18, 2008 | Gateway 400SD4 Notebook

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