Fixed another laptop with a method

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Fixed another laptop with a method
Tweet Topic Started: Aug 15 2017, 01:06 AM (614 Views)
Rockman	Aug 15 2017, 01:06 AM Post #1
hoighty-toighty Posts: 11,070 Group: Guardian Member #48 Joined: December 17, 2004 Gender Male Country United States What Browser do you use? Firefox, when it isn't crashing.	This laptop I recently fixed was having issues with the graphics chip. Bios beep of 7 short beeps indicated a problem with the motherboard hardware. Just like in this video, I had to do a reflow of the graphics chip based on a lot of sources stating that this fixed their exact model of laptop. So I gave it a shot and it worked. Here's a short video of how to do it. This guy uses a thermal couple to determine how hot the edge of the chip is getting so it doesn't damage anything. Not super important to do that. I fixed this laptop with about 30 seconds of direct heat at 550 degrees. I also placed the aluminum foil around the chip to keep direct heat from melting any of the plastic around it. You can pick up a heat gun on amazon for around $20. Worth every penny if you're in the business like I am.
	JAke is a copyright of Spazo and Pickle Flavored Fudge Pops inc.


Cal	Oct 7 2017, 01:01 AM Post #2
I may not deserve to live, but I will protect those in my reach with my reverse blade! Posts: 5,259 Group: Member Member #6,087 Joined: April 25, 2011 Gender Female Favourite Anime hentai What Browser do you use? hentaibrowser Favourite Manga hentai	As a note without using some sort of 3D Xray you run the risk of a solder bridge forming underneath the BGA which could short out the entire PCBA.



Rockman	Oct 7 2017, 01:16 AM Post #3
hoighty-toighty Posts: 11,070 Group: Guardian Member #48 Joined: December 17, 2004 Gender Male Country United States What Browser do you use? Firefox, when it isn't crashing.	Cal Oct 7 2017, 01:01 AM As a note without using some sort of 3D Xray you run the risk of a solder bridge forming underneath the BGA which could short out the entire PCBA. I have access to an xray machine. I just have to sneak the board in and out of work. We also have BGA replacement machines. I learned how to use them just a few months ago too. But for the record, in the amount of time and the amount of heat that I used, it is nearly impossible for the solder to flow so much as to blow across their Solder Mask Cell. <600 degrees and <45 seconds. Normally Bridging occurs at >750 at the temp that we use to replace BGA chips at work. Also, I realize this. Luckily it worked and I didn't bridge anything. In fact I gave it back to the person who gave it to me. Haven't heard a single word of protest since.
	JAke is a copyright of Spazo and Pickle Flavored Fudge Pops inc.


Cal	Oct 7 2017, 01:20 AM Post #4
I may not deserve to live, but I will protect those in my reach with my reverse blade! Posts: 5,259 Group: Member Member #6,087 Joined: April 25, 2011 Gender Female Favourite Anime hentai What Browser do you use? hentaibrowser Favourite Manga hentai	Rockman Oct 7 2017, 01:16 AM Cal Oct 7 2017, 01:01 AM As a note without using some sort of 3D Xray you run the risk of a solder bridge forming underneath the BGA which could short out the entire PCBA. I have access to an xray machine. I just have to sneak the board in and out of work. We also have BGA replacement machines. I learned how to use them just a few months ago too. Also, I realize this. Luckily it worked and I didn't bridge anything. In fact I gave it back to the person who gave it to me. Haven't heard a single word of protest since. That is good. We have a BGA replacement machine too, called FineTech or something like that. We also use it for fine pitched leaded ICs. Everything else is good 'ole Solder Iron/Blower and a can do attitude. Quote: n the amount of time and the amount of heat that I used, it is nearly impossible for the solder to flow so much as to blow across their Solder Mask Cell. <600 degrees and <45 seconds. Normally Bridging occurs at >750 at the temp that we use to replace BGA chips at work. We have oven profiles with a temp way lower that that with multiple BGAs on them (automotive grade PCBAs with 1-10k components). Not sure if you're using leaded or non-leaded paste though. Edited by Cal, Oct 7 2017, 01:22 AM.



Rockman	Oct 7 2017, 01:25 AM Post #5
hoighty-toighty Posts: 11,070 Group: Guardian Member #48 Joined: December 17, 2004 Gender Male Country United States What Browser do you use? Firefox, when it isn't crashing.	Cal Oct 7 2017, 01:20 AM Rockman Oct 7 2017, 01:16 AM Cal Oct 7 2017, 01:01 AM As a note without using some sort of 3D Xray you run the risk of a solder bridge forming underneath the BGA which could short out the entire PCBA. I have access to an xray machine. I just have to sneak the board in and out of work. We also have BGA replacement machines. I learned how to use them just a few months ago too. Also, I realize this. Luckily it worked and I didn't bridge anything. In fact I gave it back to the person who gave it to me. Haven't heard a single word of protest since. That is good. We have a BGA replacement machine too, called FineTech or something like that. We also use it for fine pitched leaded ICs. Everything else is good 'ole Solder Iron/Blower and a can do attitude. Quote: n the amount of time and the amount of heat that I used, it is nearly impossible for the solder to flow so much as to blow across their Solder Mask Cell. <600 degrees and <45 seconds. Normally Bridging occurs at >750 at the temp that we use to replace BGA chips at work. We have oven profiles with a temp way lower that that with multiple BGAs on them (automotive grade PCBAs with 1-10k components). Not sure if you're using leaded or non-leaded paste though. They provide Lead solder in some areas but most projects are strictly ROHS and the solder can't even enter the area. I usually use Lead solder when i'm needing to bridge the hell out of something. LOL
	JAke is a copyright of Spazo and Pickle Flavored Fudge Pops inc.


Cal	Oct 7 2017, 01:39 AM Post #6
I may not deserve to live, but I will protect those in my reach with my reverse blade! Posts: 5,259 Group: Member Member #6,087 Joined: April 25, 2011 Gender Female Favourite Anime hentai What Browser do you use? hentaibrowser Favourite Manga hentai	So in what capacity is your role where you work? I'm a QE and mainly work with Toyota and create/enforce customer/quality guidelines from SMT, Hand Insert (wave solder), and actual assembly.



Rockman	Oct 7 2017, 11:16 AM Post #7
hoighty-toighty Posts: 11,070 Group: Guardian Member #48 Joined: December 17, 2004 Gender Male Country United States What Browser do you use? Firefox, when it isn't crashing.	Cal Oct 7 2017, 01:39 AM So in what capacity is your role where you work? I'm a QE and mainly work with Toyota and create/enforce customer/quality guidelines from SMT, Hand Insert (wave solder), and actual assembly. I do test development for both board and system level. To include figuring out where to probe the board, creating a fixture and software framework to test it, developing test plans to test the board or assembled units, automating how the unit enters the fixture, automating the software to run a full test, RF test specs, creating connector translation board or multiplexer arrays for many channels, building relay networks, etc. Before that I was the debug engineer for another project. I spent all my time debugging and repairing fresh SMT boards.
	JAke is a copyright of Spazo and Pickle Flavored Fudge Pops inc.


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