Comments on: DC power jack repair guide. Do-it-yourself instructions.

By: cj2600

cj2600 — Fri, 10 Feb 2012 22:02:25 +0000

@ Sam,

I noticed that my laptop (Compaq Evo N800c) occasionally does not get power when I plug it in. The AC power pack is lit up, but the computer says there is no power. At best, if I plug it in, I get a few minutes of power and then it cuts out. Wiggling the power cord in the jack or taking it in and out does not seem to help. Is it the jack, or a fuse somewhere, or is it just the cord? What do you think.

I don’t think this is fuse problem.
Most likely it’s either bad DC jack (most likely) or AC adapter cord (less likely).
I would test the AC adapter first. Use a voltmeter. If power cuts off when you move the cable, probably there is a short inside. Replace the adapter.
On the other hand, if AC adapter works properly, this is DC jack related failure. Try replacing the jack.

By: Sam

Sam — Wed, 08 Feb 2012 00:54:39 +0000

Hi. I noticed that my laptop (Compaq Evo N800c) occasionally does not get power when I plug it in. The AC power pack is lit up, but the computer says there is no power. At best, if I plug it in, I get a few minutes of power and then it cuts out. Wiggling the power cord in the jack or taking it in and out does not seem to help. Is it the jack, or a fuse somewhere, or is it just the cord? What do you think.
Thanks,
-Sam

By: cj2600

cj2600 — Fri, 13 Jan 2012 23:55:30 +0000

@ Valentin,

Can I repleace the broken power jack of Lenovo with a new power jack wich will fit the power adapter of my ASUS? ( the power adapter of my asus fits the parameters for lenovo )

Probably yes, but I would suggest using original parts. They are not expensive.
You can find a new original Lenovo AC adapter on eBay for about $20.
New DC jack is about $5.

By: Valentin

Valentin — Fri, 13 Jan 2012 17:35:49 +0000

I have an Asus F3U laptop. I have found a Lenovo Z60t without power adapter and with the dc power jack broken.

Can I repleace the broken power jack of Lenovo with a new power jack wich will fit the power adapter of my ASUS? ( the power adapter of my asus fits the parameters for lenovo )

The Lenovo’s power jack connect to motherboar through 5 wires and a plug. How can I know in which order to sold the wires to the new dc power jack that will fit my Asus power adapter?

Thanks

By: sitrena

sitrena — Sat, 24 Dec 2011 02:56:15 +0000

I recently fixed my freezer (thanksgiving weekend) using internet directions when my laptop went out. Geekquad said I will need to replace my entire motherboard. I’m so glad I took a few minutes to search the net again. Thank you for these instructions. I will begin gathering my tools and hopefully my laptop will be up & running soon.

Merry Xmas everyone and a prosperous new year to all

By: Zach

Zach — Fri, 16 Dec 2011 21:54:58 +0000

Thanks for the awesome guide! Just repaired my Alienware Sentia m3450 with this exact problem. Now it’s charging like a dream. I’ll donate as soon as I can, I’ve got this bookmarked for good.

By: codereaper

codereaper — Tue, 29 Nov 2011 15:25:46 +0000

Hi my HP dv4 series laptop stopped working all of a sudden while I was watching a movie yesterday.Now it doesn’t switch on at all.I tried hard resetting but didn’t work. It switched on once when i tried to turn it on with the laptop upside down, the screen was blank and all the lights and the fan turned on but none of the buttons or the power on switch was responding. Well the screen flickers some times(when only with the battery attached and with no power cord on ) and sometimes the screen appears white even when there’s no power light. Can anyone help me pleeaseeee.

Thanks

By: cj2600

cj2600 — Fri, 25 Nov 2011 01:41:53 +0000

Shwan,

I have a Compaq Presario C712NR and my battery has stopped charging and the connection with the AC adapter is loose (blue light goes on and off). I was hoping you could help me if you knew if this kind of Jack installation requires soldering anywhere (I did not see anything but wires attached to the DC jack when i Had the laptop apart)and if it has wires attached do they need to be soldered or just plugged onto the back of the new jack?

It look like the DC jack attached to the power cable which can be unplugged from the motherboard. Instead of buying just the jack and soldering it to the cable, I would suggest buying the DC jack harness (DC jack with the cable). In this case you'll be able to replace the harness without soldering. I think this DC jack harness fits your laptop.

By: Shawn

Shawn — Wed, 23 Nov 2011 21:13:11 +0000

I have a Compaq Presario C712NR and my battery has stopped charging and the connection with the AC adapter is loose (blue light goes on and off). I was hoping you could help me if you knew if this kind of Jack installation requires soldering anywhere (I did not see anything but wires attached to the DC jack when i Had the laptop apart)and if it has wires attached do they need to be soldered or just plugged onto the back of the new jack? Thanks for your help and thank you for the forum and sorry for my bad english.

By: cj2600

cj2600 — Mon, 21 Nov 2011 23:14:20 +0000

@ EMIRATES,

how do i fix DC jack for ibm thinkpat t43?

In IBM ThinkPad T43 the DC jack is not soldered to the motherboard. It's attached to the power cable. If the jack failed, it's necessary to disassemble the laptop, disconnect the DC jack harness and replace it with a new one. You can search for a new DC jack on eBay. Just search for "ThinkPad T43 jack" and you'll find it. Here are two different service manuals for ThinkPad T43. Choose one depending on the laptop model number. ThinkPad T43 (1871, 1872, 1873, 1874, 1875, 1876) and ThinkPad T43, T43p (2668, 2669, 2686, 2687) The service manual has laptop disassembly instructions.