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- เผยแพร่เมื่อ 26 ส.ค. 2024
- How to Reball Asus X72D X72DR using low cost equipment, i reballed this laptop about 3,5 years ago and now i have to reball it again :/ the laptop shows a black screen.
The owner is gaming with this laptop and the thermal stress causes the BGA to fail, i hope this repair will also last a couple of years :)
Why Reballing ? The chip is soldered to the motherboard with many small solder balls (BGA) and one ore more solder joints crack with time due to the thermal cycle which creates thermal stress (contraction and expansion en.wikipedia.o...) and the laptop stops working, old thermal paste-pad or paste-pad with bad heat conductivity and clogged cooler increase the thermal stress, with this procedure we replace the solder balls and resolder the chip to the motherboard and the laptop works again.
Thanks for watching, don't forget to Like and Subscribe
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Acá en Argentina nadie te va a reconocer semejante trabajo!!! Solo los que estamos metidos en este maravilloso mundo nada más
Totalmente como decis! Hace un excelente trabajo Nik!
What does this process cost? I had stop a the 16 min.mark to ask. The first half was intriguing. Great video.
Good job teacher
Wow, great job man
Thanks
Nik Telio
Very nice work CONGRATULATION!!!
amazing
Nik master is a nice and educational video. laptop did not install the fan cooling power cable. :)
Thank you, i did connect the fan power cable after the test :)
Thanks!!!
Hi, Nik. Thanks for all explanations! My 8 years asus i7 N76VZ is rebailing at this moment on repair shop. I have a doubt. What is the average span life after this kind of service? Because price rebailing, I am think sell it after fixed to avoid this kind of problem again soon. Thanks from Brasil.
Hello, there is no specific answer to this question, some laptops work even for more than 5 years some don't last a year,
what i found is that reducing the thermal stress helps a lot, keep the cooling system clean from dust, use a good thermal paste/thermal pad and don't play games and overheat it (laptops cooling systems usually lag in performance).
@@NikTelio Right! I will do this. Thanks for your attention!
Thank you for demonstrating the usage of copper shims I too am not a fan of thermal pads.
thermal pads is the reason why bga chips fail
Why did you use a copper shim? Why not just paste? Seems like you used a lot too
Hi, the graphics chip and the heatsink have about 1mm gap between them, i can not use paste to fill this gap, it wont have a good heat conductivity and the gpu will overheat, thermal pads are also not very good heat conductors and in time they dry out and if you do not change the pad frequently the graphics chip will overheat and fail, copper has high heat conductivity and this is why i use it.
Good
If you use either heat resistant foil tape or Kapton on the metal frames you removed from the bottom of the m/b, will that be enough to protect that area? Thanks
Also, is it more economical to replace the GPU chip? Thanks Nik
New GPU chips are expensive and it does not worth to be replaced in most cases,
heat resistant materials like kapton and aluminium tapes are used to protect some sensitive to heat components (if needed), in most cases i do not use them, if you use a bga rework station to do the repairs the temperatures are precise and the risk damaging the components is small.
Hi, very good job.
I've two asus x72 with black screens.
One started up again after reflow in oven, 3 years later black screen again, i will try to reball it without great hope, but i will try to test.
For the second laptop, black screen also but i didn't try anything (no oven, no reflow, nothing). I just cleaned it and changed themal paste.
Shall i try a reflow with hot air gun or shall I will try a reball ?
What temperature shall i try to reflow ? 210-220 °C ? Shall i try AMD chipset first (because pad thermal) ? i will replace pad thermal by heatsink copper as you did.
In case of reball, can you tell me what kind of reball did you use ? lead free (SnAgCu) ou SnPb balls ?
thks in advance
Regards
Hello, i just read your massage, i did not get a notification.
if you do not have much experience with reballing then i suggest to reflow again but use a heatgun or a bga rework station this time and use some flux like the amtech 559, i do not like the oven method because every time you reflow using the oven it shortens the life of the capacitors and they will fail eventually,
the leadfree solder melts at 220c, you must reach about 240c max for a proper reflow,
you need to reflow only the small bga chip the one that has the thermal pad on it, same one that i reball in the video.
for reballing i use leaded solder balls Sn63Pb37, (this leaded solder melts at 182c)
watch these videos for more information:
reflow using a bga rework station th-cam.com/video/iLWkNPTyg2k/w-d-xo.html
reflow using a heatgun th-cam.com/video/FU84qGSdE-s/w-d-xo.html
pcb moisture th-cam.com/video/qfuBX3RJbcc/w-d-xo.html
Awesome! you got a new subscriber. i work in a store which i repair mainly desktops, and when i have some notebooks with the same problem, i usually don't know what to do and send the problem to other company which is expensive. how can i test if a chipset is bad without removing? like with multimeter i can test something?
Hi Felipe and thank you, you can not test a bga chip with a multimeter, the usual cause of bga failure is clogged cooler and old-bad thermal paste-pad, that means that the graphics chip or northbridge overheated and needs to be repaired, many bga chips require good cooling but the cooler design is bad and usually they use thermal pads on bga chips which are bad heat conductors and the chips overheat causing the bga to fail with time, there are some tricks that you can do to find out if the bga chip is the problem like activating the laptop while applying a bit of pressure to the board beneath the bga chip and see the reaction or do this trick: th-cam.com/video/eA1qsnRuS_Q/w-d-xo.html
i see, thank you for the response. also, i have one question. You said that you can't test bga chip with multimeter, but can i test in other chips? like, i bought a damaged notebook (the seller didn't mentioned before) and i won't power on, i tested with other power supply and nothing happened. Is there a way to test if the motherboard is getting energy from the power supply? sorry if i am little noob haha
Hi, if you don't know much about electronics then the only thing that you can do with a multimeter is to check if power gets to the motherboard, check if there are solder cracks on the power plug and measure the voltage, if power gets to the motherboard then it needs someone experienced to find the problem, could be a bad VRM or bad EC controller
ok, thanks!
how important are those cool-down fans ? If i don't use them what would happen?, is it possible to end up with a warped board because of not using cool-down fans?
the fans are very important, if the board is left to cool down by itself without fans then the liquid solder will turn to solid very slowly and this will probably create cold solder joints, the rate of cool down is 3-5 °C/Sec
i traied this on rx 470 but i had problem when alining the solder balls, once i would heat up the cip the stencil would bend in the midle and would let balls go everywere, using same stancil holder as in the video,.
bad quality stencil
@@NikTelio chinese brothers got me
@@NikTelio where to get a good stencil?
@@dimitrijestefanovic6986 i usually buy that stuff on ebay from this seller www.ebay.com/usr/see-ic
@@NikTelio already got one, thx
Where do you get the reball stencils?
i buy bga stuff on ebay
@@NikTelio How much is it?
Can reflow be good enought in case like that?
yes reflow can be a good enough repair if done right, also use some flux like the amtech 559
hi friend
how you heat the chip in bga machine
using halogen lamp or using coils ?
Hello, the bottom heater is a 800w 18*18cm ceramic infrared panel and the top is a 8*8cm 450w ceramic infrared panel
Hi Nik
You are doing a great job
Can you send me a link where you can buy the wide soldering tip
Best regards
Marco
Hello Marco, watch this video and in the description you will find the parts list th-cam.com/video/W5HECI1L3dg/w-d-xo.html
thanks nik
hey man please tell me is it possible to solder turing or ampere (20xx, 30xx) on a laptop bga that had pascal? (gtx 1060)??
do the balls match?
even if the balls match, the bios will not support the new gpu
@@NikTelio i am aware, i can assure you that VBios is not a problem for me, i can flash the right one with my ch341a programmer or via nvflash..
what is that brown tape ? and how do you know which direct heat stencil you neeed to buy and the dimension of the soldering balls ?
the brown tape is heat resisting tape,
if you search the chip code on ebay you will find the stencil you need and on the stencil you will find written the solder ball size.
@@NikTelio thank you so much
nice
jobe
Awesomee !!!
Thank you
Thank you , From thailand. 23/03/2561
Thank you Thailand from the future :)
amigo onde vc consegui esquema eletrico das placas asus? estou presisando do esquema Asus x451ma mais não consigo aqui no brasil
sorry i tried to translate this but google translation makes no sense :/
Esquema Elétrico Placa mãe Asus X451ma voçê tem?
if you mean electronic circuit diagram for Asus X451ma then no i don't have it
# legenda em português
Is that copper shim 15 x 15 or 20 x 20?
15x15
@@NikTelio I got an assortment of various thicknesses of copper shims 15 x 15, but might get some 20 x 20s. Thanks again
Does friend the tip of this iron of weld voçê buy or did?
i don't understand what you mean...write in your language and i will translate it
essa ponta de ferro de solda que voçê usa voçê que fez ou compro?
if you mean my wide tip soldering iron then watch this video th-cam.com/video/W5HECI1L3dg/w-d-xo.html and in the description you will find a list with the parts to build it
Hi,
may i know what type of solder tip are you using?
Hello, watch this video th-cam.com/video/W5HECI1L3dg/w-d-xo.html
Nik Telio thank you
How long have you neen reballing Gpu's?
more then 5 years, but i do it as a hobby
hi friend! Please I want this same device
hi Nik..
i want to ask the basic profile for reballing, it's written 200°C, did you turn on the bottom heater & upper heater together (same time) and the temp is 200 (bh) & 200 (up) or with interval between them? thanks for your repply, greeting from indonesia :)
ps. one more thing, everytime i used direct heat stencil, the stencil always lifted up (bending) in the center when i reflow it with hot air so the tiny solder ball get messed, whats wrong with that based on your experience. thank you
I was about to ask the same thing, glad you asked.
If you could record a video explaining how you profile that would be awesome.
Hello, the 200-210°C profile is the pcb temp not the heaters, before starting the profile i manually activate the bottom heater and give it a head start 150-200°C (lets call it preheating) then i start the profile, my pid controller has only one output and both heaters work together, on my rework station i build a max temp thermostat for the bottom heater (a rotary button on the right side 280/300/320/340°C) this means that the bottom heater will stop at selected temp (280°C for leaded) and stay there while the upper heater reaches the same temp as the bottom heater and continues to heat more as needed (controlled by pid controller) to folow the time-temp graph until the pcb reaches ~210°C
temp profiles: www.dropbox.com/sh/sl0jixgqu8n402r/AAATlMaPdKfT7S8UG1nn-vDaa?dl=0
give me the stencil number or chip number so i can check the type and size of the stencil, and what heatgun temp you use
Thank you
Nik Telio thank you very much for your explanation, i really appreciate it, i often watch your reballing video, dont get bored for any of my question in the future please :)
Hi Nik!! How are you? Thank you for the video!! I have a questions: What did you use under the hot white plate? How big is the hole under the hot white plate? The power Regulator is this? i.imgur.com/qft18dD.jpg This the power regulator? You not have? i.imgur.com/m7X3Hkc.jpg Let me know Nik! Thank you! Jonny 😉
Hello jonny, under the bottom heater i used ceramic fiber paper and aluminium tape to insulate the heat. the diagram in the photo is the basic simple circuit, yes this is the power regulator that i use, the REX-C100 is a thermostat to control the max temp of the bottom heater but i don't use it, i build a thermostat using a small chip lm358, i suggested the REX-C100 for those who want a max temp thermostat for the bottom heater.
i have made some pictures for you www.dropbox.com/sh/fv2chikcb6klpdi/AACFsF65Mb5bPxYXJEuYQuhAa?dl=0
Nik Telio hello nik. I wanted to thank you so much. really thanks for the availability, thanks for the photos and for the time dedicated to respond. Now I have clearer ideas. I hope I can start building it too soon. 👍🏻👍🏻👍🏻 😁😊
Never buy asus laptops
Lenovo, PS3, PS4 .... have problems too with there old welds.