tag:blogger.com,1999:blog-3303788613420236381.post2510441193600045841..comments2023-03-29T08:43:17.913-04:00Comments on Getting In Too Deep: DV9000- Turns on- Shuts offHoosierhttp://www.blogger.com/profile/05092108804833084210noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-3303788613420236381.post-77411351634933321392012-02-21T19:00:56.540-05:002012-02-21T19:00:56.540-05:00Hi Mayo,
Thanks a lot for the quick reply. Yes I ...Hi Mayo,<br /><br />Thanks a lot for the quick reply. Yes I thought so, that would be very dangerous! The specific model number of the notebook is DV9521TX (Intel), not sure of the exact HP part number for the mainboard since it's back together for the moment. I suppose it could be the GPU or even the Northbridge (MCP?) causing some fault, I don't have the technical skills to specificallyCosmicDanhttps://www.blogger.com/profile/13479274003101945177noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-29421745950476654182012-02-21T18:43:27.852-05:002012-02-21T18:43:27.852-05:00Darren: That's hard to say, I don't know w...Darren: That's hard to say, I don't know where you got the instructions from. There are many bad videos on Youtube that can 'brick' your mobo. I don't know if you did it correctly, or the proper method. Almost anything could be the problem if instructions were incomplete. There are several steps to my reflow process. Not just reflowing. Some models even have added steps Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-41076379033863156592012-02-21T18:20:06.017-05:002012-02-21T18:20:06.017-05:00I have a dv6500 where the power would flash once a...I have a dv6500 where the power would flash once and then that's it after I did a reflow. I reflowed it a second time and now the laptop won't even power on. Can you tell me why this would be happening.<br />ThxDarrenhttps://www.blogger.com/profile/06650147006969744590noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-64018578433005061882012-02-15T18:18:33.492-05:002012-02-15T18:18:33.492-05:00Dan: Never ever cut the Shutdown Pin! That not on...Dan: Never ever cut the Shutdown Pin! That not only prevents shutdown from the GPU faults, but any other source, Shorted USB/IEE1394 or other parts that can literally cause a fire. Though working around the erroneous temp reporting. Something tells me that the nVidia could still be the culprit. <br /><br />Depending on the model number it is still possible for it to control the Fan too! Without Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-90413427134701358982012-02-15T16:11:41.159-05:002012-02-15T16:11:41.159-05:00Hi Mayo,
Thanks for your great coverage on the DV...Hi Mayo,<br /><br />Thanks for your great coverage on the DV9000 series laptops. I have a clients' one here with a good nVidia chip but the CPU was damaged, replacing the CPU and HSF fixed it (also did the copper shim modification) however the sensor still falsely reports that the CPU is idling at 90 degrees and shuts itself off. I know it's false because the individual cores only report CosmicDanhttps://www.blogger.com/profile/13479274003101945177noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-39315188369562718062011-12-22T09:34:03.618-05:002011-12-22T09:34:03.618-05:00East Gable: That undertaking may be fruitless as t...East Gable: That undertaking may be fruitless as there are a number of minor changes that can throw your plans awry. The biggest being the Battery terminals are in different locations. I had never considered if the electronics of that section are the same or it too has changed.Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-3133859630141440672011-08-29T17:36:12.978-04:002011-08-29T17:36:12.978-04:00Hello Sir, I have an intereating issue. I ran out ...Hello Sir, I have an intereating issue. I ran out of dv9000 boards to work on and got it into my head to repurpose an v6000 into a dv9000, the only things I havent enabled are the bluetooth port, the firewire port and the ricoh card reader. I reballed the board, and it runs fine, I put a dv9000 bios chip on the board, and added a usb port and second hard drive port. everything works fine except East Gable Repairhttps://www.blogger.com/profile/07359174060395958026noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-45273245733036796032011-06-15T06:55:09.773-04:002011-06-15T06:55:09.773-04:00On some nVidia reflows you have to be careful of t...On some nVidia reflows you have to be careful of the GPU and hot glue used. If the GPU is anchored by small black dots on the corners, those are merely guides, and Do Not Anchor the GPU. If the hotglue is red and covers most of the GPU except 2 openings top/bottom or sides, that glue DOES anchor the GPU. <br /><br />If the GPU is not anchored by the glue it can become unlevel and no contact Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-56536283851048066112011-05-16T10:13:09.696-04:002011-05-16T10:13:09.696-04:00Wednesday was hectic, went to Chicago area for per...Wednesday was hectic, went to Chicago area for personal leave, but make that this Wednesday for the flux/oxidation video. I keep having Jr. techs telling me that it is not important, but NASA & milspec assemblies require it, so I continue to do as I was trained. I cannot undertand why/how it could be better without.Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-49521207286147853342011-05-10T21:49:35.391-04:002011-05-10T21:49:35.391-04:00Will post a YouTube video soon on why flux is impo...Will post a YouTube video soon on why flux is important in the reflow process (perhaps as early as WED 5/11).Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-85551313260377656792011-05-10T21:48:06.623-04:002011-05-10T21:48:06.623-04:00Thanks for mentioning the CMOS battery! I forgot t...Thanks for mentioning the CMOS battery! I forgot to tell everyone that on <b>all the DV Series</b> especially the early ones DV21xx,DV60xx, etc... to check that first. <br /><br />They don't last 10 years like the specs say!<br /><br />Got a DV6423 on the desk now with a CMOS issue. It causes the laptop to try to read values from CMOS, and the values are empty, so it restarts, tries to read Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-47258472243739169712011-05-10T17:38:57.996-04:002011-05-10T17:38:57.996-04:00Mayo,
Thanks for the idea, i just ordered some wat...Mayo,<br />Thanks for the idea, i just ordered some water-based flux and will give reflowing a go once it comes in. Will let you know how that goes.<br />Also, for everyone elses info, this dv2000 presented what looked like a gpu fault so i jumped to reflow. Might have done better to go through the basics first. Only later did i notice that the CMOS battery was flat ~1V. This might have somethingHabibhttps://www.blogger.com/profile/13828378190204377701noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-5810893344176305102011-05-10T11:06:51.158-04:002011-05-10T11:06:51.158-04:00Habib: generally speaking on the DV2000 issues the...Habib: generally speaking on the DV2000 issues they are related to bad solder on BGA and shorted FETS (especially the AO4422's. Which leads to no power, shut downs and no video. <br /><br />re: questions -<br />1: BGA reflows that fail can lead to totally dea dunits, this is casued when the solder balls pool together under the GPU. And who knows what area may be shorted.<br /><br />2: Hoosierhttps://www.blogger.com/profile/05092108804833084210noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-62498870805130931372011-05-10T07:03:06.416-04:002011-05-10T07:03:06.416-04:00Using a thermocouple thermometer, the temperature ...Using a thermocouple thermometer, the temperature reads more than 50C but i unplug the power before the temperature gets even higher and possibly damages something else. Please keep in mind that this symptom of dead/non-responsive motherboard and overheating Max8734a started/noticed after reflowing the gpu. I use and IRDA station for the reflowing and i have done many before successfully so i Habibhttps://www.blogger.com/profile/13828378190204377701noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-75125513628275797482011-05-09T21:33:37.229-04:002011-05-09T21:33:37.229-04:00How hot is hot? I usually keep a cheap automotive ...How hot is hot? I usually keep a cheap automotive infrared thermometer around to measure chips like this. A typical symptom of failure of these maxim IC's is running hot (>50C). Replacing these can be very difficult as you can't be 100% sure everything is making contact (very hard to check for continuity on traces that small). I usually use a hot air pistol and just reflow the new IC mattbrad2https://www.blogger.com/profile/07534254643667337727noreply@blogger.comtag:blogger.com,1999:blog-3303788613420236381.post-76968804830518493032011-05-09T15:30:02.853-04:002011-05-09T15:30:02.853-04:00Hi Mayo,
Im a big fan of your work. I studied elec...Hi Mayo,<br />Im a big fan of your work. I studied electronic engineering at university and now i am trying to work self employed as a computer technician. Any help would be gratly appreciated and you can count me in to buy the DVD and maybe the reflow kit once its all ready. (would you post to London, UK?)<br /><br />I am currently looking at a dv2000 that would switch on, (fan, LEDs and beeps -Ahmedhttps://www.blogger.com/profile/00804058579580499650noreply@blogger.com