Ad: Manage updates with the Download App
ie8 fix

Laptop troubleshooting forum: acer 6935g no power at all, is it the GPU or motherboard

by: bobpassed January 1, 2011 3:09 PM PST

Like this

0 people like this thread

Staff pick

acer 6935g no power at all, is it the GPU or motherboard

by bobpassed - 1/1/11 3:09 PM

Hi

I could use some advice, I have an Acer Aspire 6935g which died while i was out of the house for about 10 mins, came back and it had turned itself off with no signs of power at all, not even the usual LED light that comes on when its plugged in.

I have run some diagnostic checks to see if i can track down the problem:
done a Hard Reset (removed battery/power cord, held the on switch for 30 secs, replaced power cord and tried to turn back on) unsuccessful.
Had another power cord/brick, tried that, nada
bare component tests, took out the cpu, gpu, ram, and HD, plugged it in, LIFE!!!! - charging normal LED came on.

disconnected and sequencially added in components and checking power, the issue seems to be the GPU or power going to the GPU (9600m gt - known for having a high die rate). Done a couple of tests with the GPU in and out. Basically no power signs at all when its in but when its out everything seems fine with the exception of no display at all. Power comes on, seems to be booting, HD light flashes, charging light shows power going to the battery, media controller lights up etc.

So i suppose the question is: is this issue most likely the GPU needing replaced or a motherboard power issue? (power socket is not at all loose and with battery fully charged its still not showing signs of life trying to boot up with the GPU in and mains power disconnected)

Thanks, bobpassed


Reply
Report offensive post
Email to friend

Your test

by R. Proffitt Moderator - 1/1/11 6:26 PM

In Reply to: acer 6935g no power at all, is it the GPU or motherboard by bobpassed

In a service center would have them replace the mainboard. That FRU included a CPU, GPU so they would have it fixed and packed up inside the hour. I know folk want to replace chips so let's try this. Can you order that GPU?
Bob


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

my test

by bobpassed - 1/2/11 5:01 AM

In Reply to: Your test by R. Proffitt Moderator

thanks Bob

I would only send it to a service centre as a last resort. GPU is on a MXM II card slot so is interchangable, I've ordered a Quadro FX 770 (512 DDR3) which is the same card as the 9600m gt but hardware optimised for 3D apps which is what i mainly use the lappy for. The new card is definately supported by the system.

So fingers crossed the card will be the actual fault, the tests that i did and the way it tried to go though the boot process when the card was out is quite promising.

When I get the new card I'll post back up the results for anyone else in the same situation.

Note though that normally I wouldn't recommend this kinda course of action unless you know what your doing inside a laptop and most laptops don't have replaceable cards.


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

You are a service shop.

by R. Proffitt Moderator - 1/2/11 7:54 AM

In Reply to: my test by bobpassed

When you opened it up and did all that you became a repair shop. I was left to comment what would happen in an authorized repair center. They often have rules about the repair since they have to warrant the repair and without a certified set of hardware they could not warrant the repair.

The home repair person has much more leeway but what the home repair shop is (re)discovering is there is no diagnostics that pinpoint what to replace. They have to rely on any clues to guide them and many are upset if a part replaced isn't the right one.

Bob


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

new graphics card

by bobpassed - 1/24/11 4:56 PM

In Reply to: You are a service shop. by R. Proffitt Moderator

Great news,

After waiting over 3 weeks to arrive my new graphics card arrived today (nvidia quadro FX 770m.)

Opened up the Lappy, attached the frame to the graphics card, applied some thermal compound, stuck it in the lappy, plugged it in............ WORKED!!!!!!!!

had a bit of trouble with the latest 26 series nvidea drivers so opted for the 25 series and its been stable and lovely since.

Im a happy bunny :)))


Was this reply helpful? (1)   (0)

Staff pick

Reply
Report offensive post
Email to friend

acer 6935g no power at all

by Phil6868 - 7/7/12 12:57 AM

In Reply to: new graphics card by bobpassed

Hi Bob,
It's been a little while since your post, but I've just had the same problem happen with my 6935g - completely dead machine. I don't really want to send my machine off for repair (based on my previous experience) and so I'm wondering if you would be able to offer some assistance with taking the old GPU board out?

After an extensive web search I'm assuming the problem lies with the GPU, and so I'm thinking of replacing this with the same (or an upgraded board).

I was very impressed at how you went about eliminating the problem to the GPU, but I'm a little worried about taking the GPU board out as I've not done this to my laptop before. I'm happy to have a go with a little guidance if that would be okay? Do you have a few step by step notes (just to remove the GPU) that you would be willing to share?

Many thanks Bob! Much appreciated!
Phil.


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

Just a tip.

by R. Proffitt Moderator - 7/7/12 12:55 PM

In Reply to: acer 6935g no power at all by Phil6868

Try https://www.google.com/search?hl=en&as_q=acer+6935g+disassembly

I see a service manual PDF and more.
Bob


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

i have the same problem

by theopisti2 - 8/10/12 5:19 PM

In Reply to: Just a tip. by R. Proffitt Moderator

I wanted to know if phil6868 manage to solve your problem, and what the problem finally was!
I'm asking because i have two acer 6935g, and both are dead!!! i tried what bobpassed suggested to one of them and i had the same results. when i disconnected graphic card, lights flash, battery charging. but it never boots of course.


Was this reply helpful? (0)   (0)

Staff pick

Reply
Report offensive post
Email to friend

Forum Icon Legend

  • UnreadUnread
  • ReadRead
  • Locked threadLocked thread
  •   
  •   
  •   
  •   
  •   
  •   
  •   
  • ModeratorModerator
  • CNET StaffCNET Staff
  • Samsung StaffSamsung Staff
  • Norton Authorized Support TeamNorton Authorized Support Team
  • AVG StaffAVG Staff
  • avast! Staffavast! Staff
  • Webroot Support TeamWebroot Support Team
  • Acer Customer Experience TeamAcer Customer Experience Team
  • Windows Outreach TeamWindows Outreach Team
  • DISH staffDISH staff
  • Dell StaffDell Staff
  • Intel StaffIntel Staff
  • QuestionQuestion
  • Resolved questionResolved question
  • General discussionGeneral discussion
  • TipTip
  • Alert or warningAlert or warning
  • PraisePraise
  • RantRant

You are e-mailing the following post: Post Subject

Your e-mail address is used only to let the recipient know who sent the e-mail and in case of transmission error. Neither your address nor the recipient's address will be used for any other purpose.

Sorry, there was a problem emailing this post. Please try again.

Submit Email Cancel

Thank you. Sent email to

Close

Thank you. Sent email to

Close

You are reporting the following post: Post Subject

If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

Offensive: Sexually explicit or offensive language

Spam: Advertisements or commercial links

Disruptive posting: Flaming or offending other users

Illegal activities: Promote cracked software, or other illegal content

Sorry, there was a problem submitting your post. Please try again.

Submit Report Cancel

Your message has been submitted and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.

Close

Your message has been submitted and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.

Close

You are posting a reply to: Post Subject

The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to the CNET Forums policies for details. All submitted content is subject to CBS Interactive Site Terms of Use.

You are currently tracking this discussion. Click here to manage your tracked discussions.

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

Sorry, there was a problem submitting your post. Please try again.

Sorry, there was a problem generating the preview. Please try again.

Duplicate posts are not allowed in the forums. Please edit your post and submit again.

Submit Reply Preview Cancel

Thank you, , your post has been submitted.

> Click here to view your post. > Manage your tracked discussions. > Track this discussion. Close

Thank you, , your post has been submitted and will appear on our site shortly.

Close