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1 Posts

02-27-2014

United States of America

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Re: T61p exhibiting 1 long and 2 short beep and black screen

2014-03-11, 9:54 AM

I was suffering from the 1 long and 2 short beeps with no boot, after first attempting the basic checks and a stint with the hair dryer, it appeared by Nvidia GPU had kicked the bucket (got it to boot once and stay up for a while but after it was off and had cooled, no go).. After reading many posts from people who Tuus helped, I gave it ago -- he needs his own Yelp page!  Man, quick responses, detailed knowledge and quick turn arounds only kept my laptop down for about a week and a half!  Thanks Tuus!

 

P.S. This is a repair I feel most people could do, its really plug and play with the right screw driver set, the T61 repair manual and a camera to remind yourself of how things actually looked, you'd be hard pressed to find someone that couldn't do this..

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7 Posts

06-11-2010

453 Canyon Road, Winchester, VA 22602

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Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 13:03 PM

When I started up my Lenovo T61p thinkpad computer, I seemed to turn on, and beeped, but no screen.  Could you tell me what happened or what I can do to fix it?  I don't have a warranty anymore, it ran out, so I can't send it to Lenovo to fix.

Thank you,

Debi

 

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2253 Posts

01-02-2011

United States of America

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Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 13:23 PM

wrote:

When I started up my Lenovo T61p thinkpad computer, I seemed to turn on, and beeped, but no screen.  Could you tell me what happened or what I can do to fix it?  I don't have a warranty anymore, it ran out, so I can't send it to Lenovo to fix.

Thank you,

Debi

 


Debi,

 

There is a lot of good info in this topic but I'd read it backwards, starting with the most recent posts. If you want the problem summerized into one paragraph it's not really possible, but I'll try. 

 

The graphic processing units used in these models were unreliable, all except the ones used in the last month of production. To properly fix the problem you'll need to replace the motherboard and if you want to avoid this problem reoccurring you'll want either a board from an august 2008 laptop (Extremely rare), or a board with Intel graphics which is the most reliable solution. Some of them are equally rare too. The problem was the materials that nVidia used to bond the chip together and the fact that they expand at different rates when going from room temp to operating temp and back. Each heat-cycle causes stress on the chip and eventually leads to fractures in the circuits. The moment a vital circuit is effected your laptop dies. 

 

These machines are easy to work on and if you want to swap your motherboard you can be back up and running with only a moderate amount of work.

ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.
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7 Posts

06-11-2010

453 Canyon Road, Winchester, VA 22602

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Re: T61p exhibiting 1 long and 2 short beep and black screen

2014-03-12, 13:43 PM

I have the same problem but mine is a Lenovo T61p thinkpad 6460-8VU, which I'm sure is out of warranty, since I bought if from my company that was replacing all their computers. Is the 44c3931 the same motherboard I would need? Also, is there a youtube video or somewhere that could show me how to replace the motherboard? Please! I need my computer! I love this computer, but can't afford a lot to get a new one....Help please! email: xxxxxxxxx@gmail.com

 

Moderator note; e-mail address removed to stop the spambots getting it

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7 Posts

06-11-2010

453 Canyon Road, Winchester, VA 22602

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Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 13:54 PM

Thank you for replying.  My computer is a Lenovo T61p thinkpad-6460-8VU.  What motherboard would you suggest, and is there somewhere that could show me how to replace it.  

Is this what you are telling me?  That I need to replace the motherboard?  I am pretty good at working on things like this, so I think I could do this.   Is the Nvidia chip on the motherboard?

Will wait for your reply.

Thank you so much!

Debi

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2 Posts

03-12-2014

UK

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  • Message 1536 of 1612

Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 14:06 PM

Hi Tuus,

I just registered on the forum, but I have known the forum and your helpful posts for a while... I first got my T61p GPU failure July 2013... Read this forum and decided to fix it by re-flow-solder the GPU (done by a friend at work). But now, not surprisingly, I have the GPU problem resurface. So the reflow worked for about 9months, not bad I guess but pulling appart and rebuilding the machine is quite cumbersome. I could redo a reflow but since I never use the 3D GPU capability of this machine, I thought it would be better to switch the MB to an Intel-GPU one.

Would you be able to help source a Intel-based MB ?

I do not know the exact model number for the laptop because I bought it of ebay and the model marker at the back has strike-through. So I suspect the model I can read at the back is not the MB inside. Howver I do know, from MB sticker, that it is a 42W7653 MB and from the OS that it's T7300 (2GHz cpu).

 

Thank You!

Chris

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2253 Posts

01-02-2011

United States of America

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Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 15:11 PM

Hi Chris and Debi,

 

Chris, as you've found out the problem wasn't your BGA solder joints, it was an internal problem inside the chip and it's very possible that the machine had failed before you purchased it (but would be nearly impossible to prove.). Over the last few years there have been many on ebay selling reflowed gpu chips, either as boards or laptops and they all fail. Prior versions of thinkpads did have BGA problems and they could be fixed by reflowing or reballing so naturally when the T61 series begun showing similar symptoms many shops treated them the same way and it appeared to work, but alll it really did was that the heat caused the parts to expand and gave you momentary contact across a fractured circuit. This is similar to how a traditional lightbulb can work if you tap on it causing the filiment to move and creat contact, but the electric flow over this contact will have resistance and will generate hot spots leading to repeat failure. Once a chip fails it cannot be repairedand sourcing replacement chips is problematic for two reasons, nVidia only produced them in small numbers and only when required to do so by oem contract, and Chinese part stripping factories have been polishing the numbers off old chips and re-etching them with new production dates to appear new (for more info on this do a google search or Let Me Google It For You ). You'll notice about 3 million hits on this topic. The only solution is a board from the last month of production which got a new chip design. I can sometimes get these but they are getting difficult to source, or a board with Intel graphics which there are several different model that vary in cost. 

 

Debi,

 

I can send you a link to the lenovo training videos that show the disassembly and reassembly procedure and if you'd like I can source you a board (both of you). What I'd need is your full model number, serial number and date code from the bottom label as well the product ID (if present) and the model number of your cpu chip (if known). Please send this info in a Private message (DO NOT post this info in the public forum). 

 

I'll do my best to get back to both of you as soon as possible.

 

ps. if you're new here and don't know how to send a PM, click on my user name and on my profile (right hand side) there will be a link (you must be logged in to see it).

 

 

ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.
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2253 Posts

01-02-2011

United States of America

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  • Message 1538 of 1612

Re: T61p exhibiting 1 long and 2 short beep and black screen

2014-03-12, 15:18 PM

wrote:

I have the same problem but mine is a Lenovo T61p thinkpad 6460-8VU, which I'm sure is out of warranty, since I bought if from my company that was replacing all their computers. Is the 44c3931 the same motherboard I would need? Also, is there a youtube video or somewhere that could show me how to replace the motherboard? Please! I need my computer! I love this computer, but can't afford a lot to get a new one....Help please! email: xxxxxxxxx@gmail.com

 


Hi drainey,

 

Sorry, almost missed your message but you can feel free to message me with the same info as requested above, but to directly answer your question, most 44c3931 boards will have the same potential for failure that yours does. The only way to be sure one has the new vs old chip design is to source it in the original laptop.

ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.
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7 Posts

06-11-2010

453 Canyon Road, Winchester, VA 22602

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  • Message 1539 of 1612

Re: T61p beeps 1 long and 2 shorts with a blank screen when booting

2014-03-12, 17:48 PM
I sent you the information! Thank you! I will wait for your reply on the sourcing! Debi
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7 Posts

06-11-2010

453 Canyon Road, Winchester, VA 22602

13 Signins

172 Page Views

  • Posts: 7
  • Registered: ‎06-11-2010
  • Location: 453 Canyon Road, Winchester, VA 22602
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  • Message 1540 of 1612

Re: T61p exhibiting 1 long and 2 short beep and black screen

2014-03-12, 18:22 PM
I sent you information! Thank you! Please let me know if you found a motherboard for me?
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