Friday, February 18, 2011

Dell Precision M290 - Lines in Video

Currently in video preparation for posting solution of the Dell Precision M290 with lines in video. Which will be added this weekend 20 Feb.  This will be a Step-by-Step video.



  1. Diagnosis
  2. Removal
  3. Preparation
  4. Repair
  5. Cleaning
  6. Test
  7. Reinstallation



The problem is the same for nVidia. Solderballs not making contact. In this case the solderballs are located in the video memory. See other video for similar problem. 


This is a screenshot from the video.

30 comments:

  1. think you can resolder the memory gpu okok

    ReplyDelete
  2. That was the tech before me. I wouldn't even consider soldering on a GPU.

    Obviously that tech had no idea what he was doing.

    ReplyDelete
  3. captain MF :hi mayo aim very interested in your posts am a technician and I love electronics since I was a kid its my hobby I would like to ask you about the Toshiba A305 power problem when it work on the battery but not on the dc-in iv tested all the mosfets and capacitors I thought its a problem in the quad ic ,that is in the power unit in front of the white fuse ,is that true ? or did you face this problem before? This is also a common
    problem in the dv9000 and dv6000 Intel versions I also tested the a/o4407 and the FDS6679 and also changed the max8734 and the max8743 and the result still the same no dc in power plz mayo will you help me in this ,on these models ( hp dv9000 /Toshiba a305) thatnks our leader ..regards

    ReplyDelete
  4. ben I repaired the lines on screen by simply resodage thermal memory of the card grapahique more hot air flap

    ReplyDelete
  5. captain MF :hi mayo aim very interested in your posts am a technician and I love electronics since I was a kid its my hobby I would like to ask you about the Toshiba A305 power problem when it work on the battery but not on the dc-in iv tested all the mosfets and capacitors I thought its a problem in the quad ic ,that is in the power unit in front of the white fuse ,is that true ? or did you face this problem before? This is also a common
    problem in the dv9000 and dv6000 Intel versions I also tested the a/o4407 and the FDS6679 and also changed the max8734 and the max8743 and the result still the same no dc in power plz mayo will you help me in this ,on these models ( hp dv9000 /Toshiba a305) thatnks our leader ..regards

    ReplyDelete
  6. captain MF :hi mayo aim very interested in your posts am a technician and I love electronics since I was a kid its my hobby I would like to ask you about the Toshiba A305 power problem when it work on the battery but not on the dc-in iv tested all the mosfets and capacitors I thought its a problem in the quad ic ,that is in the power unit in front of the white fuse ,is that true ? or did you face this problem before? This is also a common
    problem in the dv9000 and dv6000 Intel versions I also tested the a/o4407 and the FDS6679 and also changed the max8734 and the max8743 and the result still the same no dc in power plz mayo will you help me in this ,on these models ( hp dv9000 /Toshiba a305) thatnks our leader ..regards

    ReplyDelete
  7. salut mohamed tu pour ton prob tu dois chercher un mosfet avec initial lm 9... 8 pied c est le responsable de demarage par ac ; tu trouve ce probleme chez hp nc.......

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  8. thnx jack but what is its number ??? will u plz tell me the number of this mosfet that is responsible for ac

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  9. sselon les constructeurs de la carte mere soit mosfet avec initial LM 9630 OU UN MOSFET DE TYPE ST C9--- ILS ONT LA PARTUCULARIRTE que chaque pin libre dans la catre mere

    ReplyDelete
  10. hi mayo will u plz reply on my post about the toshiba 305 and hp dv6000 only power on battery problem.

    ReplyDelete
  11. The DV series come in two types Intel and AMD. They are designed differently and have different problems.

    Solutions are discovered by tests and diagnosis. There are many different reasons it will not come on. And I am not able to teach electronics via blog. Simply report.

    Suggest that you check caps, and Mosfets for short condition.

    ReplyDelete
  12. mohammad faqih ; i think the problem for toshiba A305 is not enough power to startup machine. This power is backing up by array capacitor or one super capacitor (sometimes called proalidzer capacitor).

    my solution is to change super capacitor (placed under processor socket),
    or ...
    you just add 2x330uF / 2,5V or 3x220uF / 2,5V .. parallel to bypass capacitor near CPU socket.

    this always work fine for my jobs

    ReplyDelete
  13. Mohamad: What is the exact model number of the DV9000? Remember some are Intel, and some are AMD. So the parts would be different in the power in section.

    ReplyDelete
  14. Mayo ; i have problem with Acer Aspire 2920z.
    When i push power button, all indicator lamp (LED) is ok ... like working fine.
    But there is nothing on display .. and so at external monitor .... there is nothing.

    help me mayo, where is the problem in this laptop motherboard?

    thanks a lot

    ReplyDelete
  15. Naph: First- all motherboards are not repairable. Some manufacturers don't use techniques that others use. ACER and HANNSTAR are different.

    I have run into that problem on other Acer that use the same board features. But because the Intel GPU is not anchored (using high temp hotglue like the red or black glue on HannStar boards).

    Reflowing will cause the chip to rise or become uneven. When the chip is not level, some solder balls do not make contact and then the board is unusable.

    Recently I tried using a small guide made of aluminum on the edges, so that it will remain the same height off the motherboard. Then a weight (covering the center ceramic) added to the top of the of the GPU to keep it pressed down, before starting the reflow process. Too bad I did not measure the weight in grams or ounces.
    ----- ----
    Also check to see if DVD and Hard drive initializes at startup. If it does, it is usually the GPU, if not it usually the South Bridge.

    ReplyDelete
  16. thanks mayo,

    i mean not motherboard, but component or chipset on that motherboard.

    reflow process maybe cause uneven chip, but ...
    how about chipset reballing ?
    are this not usable to fix chipset (ball) problems?

    ReplyDelete
  17. mayo iam asking in general i dont have a specifik model for dv6000 and dv9000 but i worked on them many hours and iv noticed the location of deffect parts on these models(dv6000/dv9000) its beside the PCMCIA , the most power problems is happening there
    ive asked you about the toshiba a305 power problem ive also worked on it and i found the deffected IC and i will post its number ,thnx mayo

    ReplyDelete
  18. Naph: reballing would fix the GPU issue, but in the U.S.A. motherboards are cheaper than reballing.

    Mohamad: What chip number were you mentioning? MAX8734 or another.

    ReplyDelete
  19. motherboard are cheaper than reballing ? sure?

    in Indonesia, motherboard 2x-3x more expensive than reballing ... huff

    i think Toshiba A305 not used maxim, but usually intersil like isl6262, isl6237 ...

    ReplyDelete
  20. hi mayo,yes naph toshiba uses isl and not maxim acually in the toshiba 305 some times it run on battery but it will not take power from dc in and this is from the quad isl.. ic that is located in the power unit beside the power jack on the board facing the white fuse as i can remember ,naph i would like to have your email adress if u have a hotmail account thnx in advance

    ReplyDelete
  21. hi mohammad, i don't have hotmail account

    this my account at gmail hanaphii@gmail.com

    feel free to ask me, i hope i can help you more.

    thanks mayo .. we are uses some spaces here to share :D

    ReplyDelete
  22. Just to confirm what Mayo said. Here in the US, purchasing a new motherboard is usually the cheaper option. Worse case, its about the same price so why not just replace it all together? Reballing is one of those things (especially with Xbox) that I just scratch my head with. I'm not sure why someone would spend that much money on reballing. Bear in mind, the shops that do it for $79.99 can't be doing it correctly.

    ReplyDelete
  23. hi mayo i wana ask about the hp tx2500 it gives 1 bling at the caps lock as usual its cpu not functioning but ive changed the cpu and also reball the socket but still the same i have 3 of them and also a hp dv5 with the same issue what are the possible problems? and we are missing ur post also ...

    ReplyDelete
  24. It was a busy week. A number of units came in and I was planning a short vacation. So I got behind on the posting. Then left the SD card with videos on them at the shop. The usual common fixes were just DC jacks on Acer and Gateway machines.

    These can be the bread and butter repairs, and had not done much troubleshooting because of the time it takes. Decided to take 'Melissa' my old dualcore desktop to the shop, since it can handle it. And that way I can post more often.

    ReplyDelete
  25. Mohamad: You have to be a little more specific about the model numbers. On the bottom of units they have more detailed numbers TX2715xx etc. Because some are Intel some are AMD. When a processor class is given, I can surmise from typical problems of that model. Such as Intel usually have bad/shorted caps. AMD is usually GPU issues. Especially if the GPU center is diagonal on the AMD unit.

    ReplyDelete
  26. Also wondering why you went directly to REBALLING? It seems to be going to extreme instead of locating problem area during the diagnosis process?

    I do have other projects I am working on. Like trying to come up with some sort of diagnosis card/adapter to tell me What area is Working, and what is not.

    Here's a tip.
    When starting the DV series, watch the lights on the front panel. If you have SATA/DVD light flash once or continuing. Look at the GPU for problem. This means that the P.O.S.T. process had started. If there is no indication of HD/DVD activity, it may indicate that it is a power issue.

    If the HD/DVD light blinks, check LCD in a dim room check to see if the LCD is lit (but not displaying a image) then it is the GPU.

    That's one of the ways that I figure out where I should be looking. There have been cases where the LCD backlight has gone out too. So have an external LCD to plug into the laptop also.

    ReplyDelete
  27. I hope you had a good Vacation Mayo, it has been very boring staring at your last post of a dead Dell graphics card, i have my gpu ready and waiting laid out on my bench like a patient awaiting a transplant.

    ReplyDelete
  28. hi mayo th hp tx2500 is AMD based (hp pavillion tx2513cl )unit i reball the socket becouse the hp website says that a 1blink means that the cpu is not functioning in this unit nothing appears on the screen no boot at all just the 2 light blinking once (caps lock and scroll lock) its importtant to me to to know the problem more than fixing the unit is it possible to be the AMD GPU that has no cooler pad ??

    ReplyDelete
  29. Mohamad: But that is a general diagnosis from HP "CPU Not Working" and rarely an exact cause, unless you are fortunate enough to get a true HP engineer (which don't exist) they are all made by Hann-Star in China. It could be the GPU or the BIOS also. Or simply no power to one of the control lines in the CPU. So always do the easy stuff first, and reball at the last resort.

    michael: The vacation is this weekend, but will be sure to post the videos on YouTube so they can be linked from the blog.

    ReplyDelete

I cannot repair laptops for you via the internet, I can only answer questions related to posts. This is because I have not had experience on every motherboard that is out there. Bear with me.

If you do need it repaired. Contact me for quote (US/CDN Only)

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