Lenovo G550 Power Jack Broken

Over the last week my G550's power jack has become less and less reliable and eventually stopped charging the laptop at all.
I've seen several discussions about this being a problem but no actual instructions or pictures on how to get access to the motherboard.
Does anyone know anything else about this problem?
Thanks in advance.

To get to the power jack, you are removing most every screw on the case. Remove the panel above keyboard that houses power button, then there are more screws beneath it. Then you can get to hinges, unscrew them, find another screw at each hinge after hinge is out of the way. Also unfasten the keyboard, but don't rip it out, to find a couple more screws underneath the keyboard. And finally you can take the two halves of the case apart well enough and get in to disconnect the power jack. The DVD drive will slide out, no screws attaching it. The wiring for the power jack goes to a location by the memory where it attaches to the motherboard. I disconnected the cable by the memory and pulled it through easily.
Should take a week for the part to arrive to me. Crossing fingers that the whole trouble is this and nothing else. Found other thread here that talks about securing the jack better: http://forums.lenovo.com/t5/Lenovo-3000-and-Value-line/G550-power-connector-is-this-a-weak-point/td-...
Clearly there is a fault in the design of this laptop model, I think, when many people are having the same fatal issue.
Also, now that I think of it: if you wanted to test if this was the problem for you laptop without the trouble of disassembling everything, you could easily disconnect the power jack by removing the memory cover and unplugging it there; then plug in a replacement power jack (which you'd need to order) and test. If all works, you could then go through the bother of taking everything apart (or finding someone to do it).

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Lenovo G550, power supply

Hi, i have lenovo G550, when i start laptop, it works good, after 15-20 mins, power supply starts rotating for about one minute, after that , a small pause about 3-5 mins, and starts again, so from this time power supply begin rotating for every 3-4 mins .
I have a program that controls a processor's and hdd's emperature , hdd's temperature moves from 30 - 41 C , never higher, CPU's temperature when arrive 43-44 C , power supply starts working and when temperature of CPU arrive 33 C , power supply stop working (blowing) , so laptop never stop working.
My question is : Is this normal work of laptop, or my laptop isn't OK ???
Sorry for my bad english .

To get to the power jack, you are removing most every screw on the case. Remove the panel above keyboard that houses power button, then there are more screws beneath it. Then you can get to hinges, unscrew them, find another screw at each hinge after hinge is out of the way. Also unfasten the keyboard, but don't rip it out, to find a couple more screws underneath the keyboard. And finally you can take the two halves of the case apart well enough and get in to disconnect the power jack. The DVD drive will slide out, no screws attaching it. The wiring for the power jack goes to a location by the memory where it attaches to the motherboard. I disconnected the cable by the memory and pulled it through easily.
Should take a week for the part to arrive to me. Crossing fingers that the whole trouble is this and nothing else. Found other thread here that talks about securing the jack better: http://forums.lenovo.com/t5/Lenovo-3000-and-Value-line/G550-power-connector-is-this-a-weak-point/td-...
Clearly there is a fault in the design of this laptop model, I think, when many people are having the same fatal issue.
Also, now that I think of it: if you wanted to test if this was the problem for you laptop without the trouble of disassembling everything, you could easily disconnect the power jack by removing the memory cover and unplugging it there; then plug in a replacement power jack (which you'd need to order) and test. If all works, you could then go through the bother of taking everything apart (or finding someone to do it).

Lenovo X60 power adapter broken down

The power adapter of my Lenovo X60 laptop broke down and I'd like to fix it.
Since I don't have a schematic I'm just checking and trying to find out the damaged part. I've replaced a power MOS transistor but it seems to be ok. I've also checked the trafo and several diodes and all of them seem to work.
There are three IC's whose part numbers I can barely read. One of them seems to be an optocoupler.
I was wondering if someone could tell me where to find a schematic and a part list. Thanks!.

alfcat wrote:
I was wondering if someone could tell me where to find a schematic and a part list. Thanks!.
You may be able to find something via Google, e.g. this for the charging circuitry in a Lenovo dock that may give some hints. Keep in mind that (1) it's not an official Lenovo schematic and (2) you use it at your own risk.
IMO it's cheaper and easier to buy a used adapter on eBay or similar. But I do appreciate that there's a challenge and satisfaction that comes from fixing a broken device on your own
Cheers... Dorian Hausman
X1C2, TPT2, T430s, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30

Lenovo G580 DC board / power jack plug

Hi does anyone know where I could buy the board which the power jack is soldered to as my is damaged and can not be repaired looked all over online but unable to find one thanks

Hi croisy,
Welcome to Lenovo Community Forums!
Can you try checking the photo on this Maintenance Manual of your unit
this shows images of the parts together with part numbers
this is how the images look like:
Link to Photo
This is the link for the Maintenance Manual
http://download.lenovo.com/consumer/mobiles_pub/lenovo_g480_g485_g580_g585_g780_hmm_v1.0_english.pdf
You can check the part number of the part you need online, And i believe you can find a reseller,
you can also check http://www.lenovospareparts.com/ for that specific part.
Hope this helps
Cheers!
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Disable Lenovo G550 Low Power Beep

I own a Lenovo G550 laptop and although many issues are bareable, the low power beeping is not. I believe it is a setting in the BIOS that controls the annoying noise. In Windows 7, muting the speaker/headphone volume was enough, but in Linux it is not. Is there any BIOS update or settings within the BIOS that I can change to disable this beeping?
BIOS: 18CN33WW (V2.06) (08/21/2009)
As shown by lshw command in Linux.

Unpack the exe package with 7Zip and edit the config file if you have one. Read carefully inside it about flags (for example: make a backup for current BIOS, reboot/halt, erase CMOS).
I'm against BIOS updates under Windows enviroment. So, you can search on Google how to make a BIOS flashing using a pendrive/dvdr under DOS enviroment.
IPnaSh
First Spanish Community Guru - Colaborador ad honorem

Lenovo G550 does not charge properly.

Well, hello everyone.
I have been experiencing a problem with my Lenovo G550 lately. It doesn't charge properly and at most cases, I have to charge it when it's turned off. When I start up my laptop and as soon as I get to the Windows login screen (or not even up to the loading screen), the power LED starts to blink. I log in to see the laptop not charging. I have tried everything you'd usually do such as, turning the laptop off and on after awhile, removing the battery and putting it in after a few minutes or maybe even an hour, check the charger, take the charger in and out of the laptop and even letting the laptop rest for awhile without the charger or battery in. Sometimes even after all that, it seems like it still doesn't charge. Sometimes it does charge when turned on, although, only charges for a few minutes and stops charging. Even when switched off, sometimes, it doesn't charge properly either.
If you know anything that would fix this, a suggestion or if you know why I'm having this problem, please reply to this.
Ah, silly little computer.
[email protected]
http://youtube.com/xXShadowKillSonicXx
Solved!
Go to Solution.

I have a friends laptop hoping to fix a common issue (or as I thought) of a broken power adapter socket. Without the battery in place when you plug the ac adapter in you get no lights and when you press the power button nothing happens.
Upon disassembly and also with the use of the internet I found that Lenovo actually has a nice setup where the yellow socket is removable retained by a single screw, with a pigtail and plug for the main board. So I pin tested the plug using an ohm meter and it tested good. Then I reattached the plug to the motherboard and tested it using the ac adapter and got 20V between both blue and black terminals. Then flipped the board over and I got the same results on the pins on the back of the board so power is getting to the solder points. But that is where the trail went cold.
Anyone have any ideas? I won't recommend her to buy a new motherboard at this point of even go to the expense of having it checked out which would exceed the value of this unit.
I am thinking there is a voltage regulator somewhere in between the battery and the mainboard power that might be the cause but that is above my electronic prowess.
One thing I can say is if this is not a simple fix I will guide her to look to another brand for a replacement. I have it stripped down to the mainboard and tempted to reassemble it to see if it really does charge the battery but just doesn't let you know via the charge lamp. I do know it won't run without the battery pack which has a little power left but saving it for now.
Can anyone help?
Thanks,
Steve

G550 Power Button Problem

Recently I received a Lenovo G550 but the problem is that clicking the power button does nothing. Holding it for a while does nothing either. I managed to turn on the computer when I accidentally clicked the OneKey button and rebooted from there but it is inconvenient to do this every time. Once on, I click the power button which, according to the "when I press the power button," should put the computer to sleep mode but instead does nothing. Holding the power button does nothing either. What can I do to fix this problem?

I bought G550 last jan 2010 and ran out of warranty last month. my laptop is not powering at all.
it happened after i replaced my broken keyboard with a new one.
when i removed the multimedia panel (that has power button, audio controls, onekey rescue button), it looked like i damaged the ribbon cable that goes from the back of this panel into the motherboard (which is under the
keyboard).
the pins on the ribbon cable were distorted and couple of times it powered and after that i could never power it on.
unfortunately i lost the cable, so am not sure of the make of this cable. i am looking for a replacement part
Is there any way to get the parts list for g550?
your help is much appreciated.
i believe this is the part. can anybody confirm?
http://www.laptoprepairco.com/itemdetails/itemdetails.asp?ref=284&category=cables

Lenovo G550 Windows 7 Professional Upgrade

This Notice refers to 2958-A5U and 2958-A4U models of the Lenovo G550 notebook PC’s only.
The 2958-A5U and 2958-A4U G550 systems ship preloaded with Windows XP Professional, and include a Windows 7 Professional upgrade disk.
Issue: When upgrading from Windows XP Professional to Windows 7, some users have been unable to successfully complete the upgrade.  The most commonly reported failure point is when the customer is asked to insert a Certificate of Authenticity (COA) key. The Microsoft Upgrade process for Win XP to Win7 requires the upgrade to be executed from a ‘cold boot’. If the Windows 7 DVD is inserted while the system is running, the installation process will auto run. However, at the end of the installation process, the system will ask for a 25-key Certificate of Authenticity (COA). The Win7 upgrade process will not successfully finish the installation using this method. The installation DVD must be inserted while the machine is powered off and not running.
When upgrading from Windows XP Professional to Windows 7, Microsoft advises that this process be done via a custom ‘clean’ installation.  Per Microsoft.com; "A custom (clean) installation erases the contents of your PC's hard drive. Your files, settings, and programs will not be transferred to Windows 7".  The clean install will remove any pre-loaded software applications, including VeriFace, One Key Recovery, and other applications that were installed by Lenovo or the user.
Customers should review the following information prior to performing the Windows 7 Professional upgrade.
The Windows 7 installation procedure provides a clean installation of Windows 7 Professional edition. During this process, all contents of the C: drive including all applications, files, programs and user data will be archived in the Windows.old folder.  The data should be available for access, but the applications and programs will not run, and Windows 7 appropriate versions will need to be installed. Lenovo STRONGLY recommends that external backups or all user data are made prior to initiating the upgrade in order to prevent permanent data loss.
Correct Windows 7 Upgrade Procedure:
1) Power off system
2) Insert Windows 7 disk in the DVD drive
3) Power on system and press F12 to access the boot order menu
4) Select the option to start from the DVD / Optical drive
5) Follow the on screen directions as Windows 7 installs
6) Remove the DVD at the end of the process and reboot to Windows 7
Windows 7 has native drivers that will fully support most of the hardware on Lenovo G550 systems.  In order to maximize the functionality of the Trackpad and the Power Management system, the appropriate Lenovo drivers must be installed. The most current Lenovo Windows 7 drivers and applications are available for download here. Please check this site periodically for updates.
Recovering to Windows XP by using One Key Recovery:
The One Key Recovery feature can restore the factory XP downgrade preload at any time, but will erase all other data.
Important: All user data should be saved prior to implementing the following procedure
      1) Power off the system
2) Press the recovery button (small round button next to the power button)
3) System will start and OKR (one key recovery) application will load
4) Select System Recovery from the menu
5) Select option to Restore to factory default
6) Click “Start” button to recover your system partition
Cheers and regards,
• » νιנαｿѕαяα∂нι ѕαмανє∂αм ™ « •
●๋•کáŕádhí'ک díáŕý ツ
I am a volunteer here. I don't work for Lenovo

eaeditor wrote:
Now I just started the laptop up , clicked next when I was prompted for the product key and windows 7 ultimate 32 bit pro starts up...ofcourse I still need to authorize...the serial at the buttom is still a no go
Error message displayed: the product key will not work with this version of windows 7 and I need to reinstall or get a serial for windows 7 professional .
The recovery disk set is supposed to have an SLP key embedded, so that you do not need to activate it, as long as the disk set matches the OS version that is nominated on the COA attached to the laptop.
If it really does say "windows 7 ultimate", then there is something odd going on. Can you please double check that it says "ulitimate"?
With Windows 7 licening issues and keys, the terminology needs to be quite exact to get to the best answer for you!
Cheers,
Bill
I don't work for Lenovo

URGENT Lenovo g550 webcam does not show up in Device Manager and all drivers cannot be installed

Hello everyone. So my lenovo g550 webcam stopped working after I did a clean install of windows 7 home. When I go under device manager I do not see any unknow devices. When I also go to show hidden devices it is not there. Could anyone give me information about how to fix this and if the cable to the webcam might be broken. If so, is there a way I could convert the webcam's pin outs to usb to test it. I have split an old usb cable into four colored spots. Not sure if i want to test it though. That would be my last resort. If needbe, can you tell me the pin outs for the webcam. It has five connectors. The reason I know this is usb is because my older installation on windows 7 detected it and said that the usb could be faster. Thanks.

Sorry about that. I've only been a member for a few days. I will remove the post with all Capps. Have a nice day!

Thinkpad E420s power jack issue

I am having an issue with DC power jack in my thinkpad E420s.
when I plug-in charger, charging light detect the charger but when I roll over my mouce to bettery symbo, it says 'pluged in, not charging).
Also, I tried to lookuop the part number for power jack, but this product is no longer available for lenovo, so I couldn't find information on lenovo.com.
Can anyone please help me out with this issue.
Thanks

Hi Hammesh,
The FRU number of DC in cable for E420s is 04W1756. Refer hardware maintenance manual to understand how to replace it.
Best regards,
Mithun.
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Lenovo G550 puking rainbow colors in the middle of the screen

Okay, so as the title says -- and, yes, I am serious -- the screen of my sister's Lenovo G550 has vertical stirps of colors grouped in the middle of the screen. the background is somewhat similar to the background color of the usualy Windows 7 start-up. But what scared me when I saw it was the fact that upon pressing the power button, the lenovo start-up screen did not show instead it just looked like an old tv closing down. The thing is, it was fine yesterday when my sister was using it. Then all of a sudden when she opened it this morning, the screen showed that. If it were degenerative, then I guess it might take a while and not so sudden right?
Please, if anyone can help, please reply to this thread the soonest you can.
Thank you. (:

It doesn't. My sister gave me additional information: When she opened it this morning, it was fine then the screen turned white that's when the problem started. A while ago, we removed the battery pack and let it stand for a while. Suddenly, we saw a hazy picture of my sister's screen before it all went crazy. I really don't know what happened. It shouldn't just go crazy without a reason right? I mean, if the lcd were to fail, it would not fail suddenly but instead it would fail over time (my brother's lcd -- same laptop -- has white horizontal streaks on the screen).
Edit: Just tried on an external LCD and it works. It just doesn't work on her laptop's LCD. Do you know why it suddenly konked out?

Lenovo G550 doesnt turn on Please help :'(

Hey, its been couple of months since my Lenovo G550 is not at service. It happened in a bad day ofcourse... I was playing some game in it, there was no display in the Laptop because I set my Desktop monitor as the main display.
So suddenly the power goes out... I had charger attached though. Then it died... and now it doesnt turn on... no sounds... no display... just the four lights at the bottom... Also there are no lights in the "sound" place on the corner...
Some1 please tell me what the problem is... :'(
Oh also... when I attach the charger in it... it does a loud 'beep' noise.

I have this problem too, I've tried everything on the apple website and on forums on the internet, nothing works. I've uninstalled and re-installed all apple software on my computer, I've used every USB port there is on my computer, I've used both USB cords I have, I've restarted my computer many times, I've turned my ipod off and on again. Nothing works!

Lenovo G550 AC disables when battery is connected

I am having an odd issue with my lenovo G550. When I have the battery connected it will charge for a few seconds and then the AC will disconnect. I have tried discharging, then rebooting with just the AC and that works fine. It will not boot with the battery even though there is some power in the battery and it will boot with the battery and AC. I had tried getting another battery as well, but the same issue happend. Any ideas?

Hi n2gaby,
Am sorry to hear about the issue that you’re facing and I’d like to provide you with the contact numbers for the service support:
United States
IDEA-branded and
B, C, E, G, H, K, N, Q, V, Y Series Products
1-877-4 Lenovo
(1-877-453-6686)
24 hours a day
7 days a week
Hope the information helps. Let us know.
Regards
Soha
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Lenovo G550 Keyboard not Working.... Can't log in to the system...

Hi, I am using Lenovo G550 Model. Yesterday, I started facing this problem. When I tried to login, none of the keys worked. When I pressed Backspace, it started typing something. I tried to use on screen keyboard, which did not help either. Same problem persists with on screen keyboard as well. I, even, tried using an USB external keyboard & the same problem is there too. Kindly help me!!!

hi Avikiru,
Welcome to Lenovo Community Forums!
Can you try,
Remove the AC and the Battery
Hold the Power Button down for at least 15 sec.
Reconnect just the AC and see if that'll work
If not You can contact a Lenovo Support Team or a Local Technician to have the Keyboard connection checked.
Regards
Solid Cruver
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Lenovo G550 processor upgrade

I am upgrading a Lenovo G550 that I purchased a few years ago for my wife. So far I was able to install 8GB or RAM and a 500GB HDD with no issues. However when I tried to upgrade the processor, the laptop would not power up. It will turn on and the lights will indicate that the HDD is on and the battery is on, but I do not get the Lenovo splash screen. I hear my fan going but nothing happens. Only a black screen. I purchased an Intel Core 2 Duo processor P7550 (2.26GHz, 1066MHz FSB, 3MB L2 Cache) based on the speciation sheet below. I was wondering if anyone might know where I could find any documentation that specifically lists what CPUs are compatible with the Lenovo G550. Ideally I'd like to install the best processor it will take. Thank you.
http://www.lenovo.com/shop/americas/content/pdf/notebooks/Essential/G-Series/G550%20Datasheet.pdf
Solved!
Go to Solution.

hi there,
I haven't seen a G550 with a Intel Core 2 Extreme Mobile QX9300 CPU but if you bought it working from a G550 laptop or it has a lenovo FRU on it then it may work (it'll also good if you can return the item just in case it doesn't work).
In addition, take note that the QX9300 has a max TDP of 45W, whereas the CPU's listed in this pdt datasheet are only 35W so the motherboard might not take the heat if the QX9300 reaches it's peak usage.
Also, I've looked into some additional details and these are the CPU's that are tested to work with the G550.
More info:
Lenovo G550 CPU upgrade
Goodluck!
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Lenovo G550 Power Jack Broken

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