Nvidia GPU chip problem

[hifihifi]

Nothbridge SYMPTONS:

What are the symptons off a broken northbridge (intel) ?

[hifihifi]

Originally Posted by oudeh528

im looking for what temp the gpu need to be in and for how long to fix the heat problem and if somebody have the same info for xbox 360 and ps3 i will appreciate it very much

gpu need to be in -> don't understand this question

[Halim_xu]

Originally Posted by tec2004

Hello everyone

I apologize if my English is not 100%, but you will understand ( i think )

i read all 13 pages of this thread and i'm happy with such good information, great website after that i decide register to share and learn more ( Dan Collins i like all your tips and skills you are very good thank you and all of you that post here tips about nvidia and temperature profile )

i have the zm-r5860c from Shenzhen Zhuomao Technology

i know lot of you don't have same machine and this it does not matter, i just like share with all of you the temperature profile that i received from the manufacture engineer please check all temperature profile and give me all of your comments about it. The re-balling bga in my opinion is a learning that every day we learn more and more to achieve better results

Halim_xu if you see this topic please share with me your profile i know you have the same machine with different profile i don't know why the seller provide this profile for you and the different for me ( my is provide by the engineer )

my ps3,xbox, laptops profile needed be adjust





please i accept all comments, tips, anything that can grow my skills

i also need suggestion of the temperature profile for xbox and ps3 please, i'm trying archive the best safety temperature to lift the gpu on both consoles

thank you all . peace . i will be here every day to share, help and learn..

Hi Tec2004,
Finally i got an accompany who has the same model bga rework ZM-R5860c to share,,
all the profiles are for reference only,,it means they are for guiding you to learn how to work with this machine,,they need to be edited
i tried all the profiles given by the seller before,,and all gave me a bad result,,all chip was popcorn with the profile because the temp is set too high..maybe you can follow all the case that i posted before..
as Mr. Dan Collin, Trion ,Pentu and others senior suggested..i learn a lot from them from basic,,'till this second still in learning
trial and error is the best to learn so that we can find the right way to do this job..keep posting and sharing what you get..gud luck

[Halim_xu]

Originally Posted by Dan Collins

tec2004,
The zm-r5860c seems like an advanced version of the Bird 5000. Looks like it uses a combo of hot air nozzles and IR. I read the manual and it seems like it uses the full temp control capabilty of the module unlike the IR and BIRD which only has preset limited functions. Not sure I can compare or use your settings since my systems do not have that level of temp control. Did you get the camera option? Not sure that would be very useful unless it could see under the BGA. Maybe you could see when the BGA self aligns it self. That could be handy. Neat machine. Keep us posted as to your results.

Hi Dan collins,
ZM-R5860c use combo of hot air nozzles from upper and bottom followed by IR,..the efficiency is we can set the temp as we wish followed by the step from preheating 1, preheating 2, activation, solder 1, solder2, and down process,,it is a fully controllable machine that we can control the temp, time and slope/ ramp up process as we like..
it comes with a setup program that we can create all the temperature setting as we like,,and this was made me crazy to find the best and most suitable temperature setting for many different kind of bga chipset,
it also comes with a camera and lcd option, but i never use them since the camera is used for staring the soldering / melding process from outside of bga chip..thank you

[gpu-reballer]

hi guys new here

just thought i would let you know what we think about reflowing

at our shop we dont reflow anything has it will come back within a few months, reballing is the best long term fix, we only reball at our shop, the only time we reflow is if thats what the customer wants due to cost, but we try & advice them that a reball is best & if it comes back again then it will cost more to fix.

also we had a jovy, but found out it was a bit weak, now we use the (honton ht-r390),
it makes the jovy look like a little girl & its cheaper & better more powerfull, also less popcorning, great machine, if anyones thinking off buying a jovy please look at the honton first,

the controls are a bit more complecated, but if i was going to buy a machine now it wouldnt be a jovy, ive also used the achi ir 6000 & ir pro sc & the honton beats them all

by the way its hotair & ir.

[Raheeeeb]

Originally Posted by gpu-reballer

hi guys new here

just thought i would let you know what we think about reflowing

at our shop we dont reflow anything has it will come back within a few months, reballing is the best long term fix, we only reball at our shop, the only time we reflow is if thats what the customer wants due to cost, but we try & advice them that a reball is best & if it comes back again then it will cost more to fix.

also we had a jovy, but found out it was a bit weak, now we use the (honton ht-r390),
it makes the jovy look like a little girl & its cheaper & better more powerfull, also less popcorning, great machine, if anyones thinking off buying a jovy please look at the honton first,

the controls are a bit more complecated, but if i was going to buy a machine now it wouldnt be a jovy, ive also used the achi ir 6000 & ir pro sc & the honton beats them all

by the way its hotair & ir.

I think you should have a look for the RE-8500

[hifihifi]

I did on a laptopscreencard a reflow. It came back, then I did a reball with leaded solder. I checked the contacts and it was a nice shape of the contact. Also cleaned the contacts before reballing. Now its come back after 3 months. I think that the problem are the contacts inside the Nvidia chip. I will replace with a new card. Because maybe its the memorychip? I cannnot reball every memorychip because there are 8 pieces.
Has anybody other exeperiences?

[hifihifi]

RE-8500 had Optimum heating with 3 controlled heating zones.
Does anyone knows what the 3de zone exactly is and how they implement.
Because I think this is the most important thing that you have also had a local spot heating under the BGA as well. I think I gone "simulate" this, through a perforated plate between the bottom heater and the PCB with a hole on the rework zone (=BGA).

[monitron]

I don't agree with reballer about the Jovy. I use it for almost 2 years now and did 1000+ repairs with it. In the first months i was learning and had some problems. But now i have no problems at all. Popcorning has nothing to do with the Jovy but with moist in the bga or to hot upper heater.

The bottom heater should be bigger and that is why i get my brand new re-8500 in two weeks

I don't like the honton ht-r390 because it hat hot-air and no usb interface.

[Dan Collins]

I have been requesting Jovy make a bigger unit for 2 years, so I went and bought a Bird 5000 a couple months ago. Wish they would have clued me in that the RE-8500 was in the works. Would have waited.

So when is this RE-8500 going to start shipping out? I may just sell the Bird.

[Dan Collins]

I must agree with moniton. I also have done 1000+ reballs and yes it was a challenge at first but my yield nowadays is 99%+

If you are getting returns, then look at the CPU for generating excessive heat, not the GPU. Assuming you dealt with the heatsink properly.

[Deusjevoo]

Same for me.
Had some help and chats with jovy tech support.
Talked about the negative points in Jovy RE-7500.
They claimed were not important and could be worked around.
Asked if there was a new machine coming in the future.
No comment on it...

Finally I went with an Achi IR Pro SC.
Knew I would get a "cheap Chinese" quality machine.
But for me, after adding an Elstein top heater, it beats the Jovy big time for what I use it for.
Now I was thinking of getting a hot air machine.
However, the new Jovy RE-8500 looks interesting.
And guess... seems they did at least tried to work around all those complaints.
Very curious for first tests, reviews, demo's, movies.
And how the profiles work...
Hope it's a winner.

[Deusjevoo]

Originally Posted by monitron

Popcorning has nothing to do with the Jovy but with moist in the bga or to hot upper heater.

Indeed, not the Jovy but Infrared Heating in general.
IR is very good at heating up liquids (H2O) very fast.
Hence the faster popcorning.
You should bear this in mind using IR while reworking.

Originally Posted by monitron

I don't like the honton ht-r390 because it hat hot-air and no usb interface.

Would prefer it to have USB to instead of RS232.
But with an USB2RS232 converter you an use it for reading out the graph plot of the profile while using it.
Which is the most important for me .
Programming I prefer manually to be sure everything is 100% correct.

About hot air, it can do faster profiles than IR.
When used carefully, not as easy popcorning as IR.
Not saying you don't get popcorning with it,but think you can go higher temps.

[gpu-reballer]

Originally Posted by hifihifi

I did on a laptopscreencard a reflow. It came back, then I did a reball with leaded solder. I checked the contacts and it was a nice shape of the contact. Also cleaned the contacts before reballing. Now its come back after 3 months. I think that the problem are the contacts inside the Nvidia chip. I will replace with a new card. Because maybe its the memorychip? I cannnot reball every memorychip because there are 8 pieces.
Has anybody other exeperiences?

hi mate

this is the reason we reball everything & never reflow, you will have better success if you just reball, what you have to think about is thermal stress to the chip, remember when the board was made the chip was put on the same way, :with heat: & then a few years down the line it then fails, then it gets reflowed, then it fails again then it gets reballed, all this heat on one chip is going to cause problems in the long run,

the problem you are having is delamination of the chip, due to all the reflow work that chip has had, everytime you are reflowing the chip its just causeing the layers of the chip to weld back together for a short while untill the layers seperate again causeing it to fail again, the reball work you have done is most likely fine, its the chip itself thats the problem.

if i was you i would get a new chip....& stick to reballing from now on.....please dont reflow if you can help it,

i do reballs every day & this is one of the lessons i have learn when it comes to reballing, also remember chips are very sensitive to static, i use all anti static gear when reballing....esd safe wrist straps, mats gloves & workstation that holds the chip to be worked on, doing this has give me a very good success rate.

hope this helps

[gpu-reballer]

Originally Posted by monitron

I don't agree with reballer about the Jovy. I use it for almost 2 years now and did 1000+ repairs with it. In the first months i was learning and had some problems. But now i have no problems at all. Popcorning has nothing to do with the Jovy but with moist in the bga or to hot upper heater.

The bottom heater should be bigger and that is why i get my brand new re-8500 in two weeks

I don't like the honton ht-r390 because it hat hot-air and no usb interface.

if the jovy works good for you, then thats great, but the problem we had was lifting the bigger chips, mainly ps3 rsx, the jovy was abit soft for the job, not saying it cant be done with the jovy because it can, ive done it so i know, but there was the odd time the chip didnt want to lift useing the jovy, thats way we got the honton


the machine i have now will lift the ps3 chip just with the bottom heat alone, also for some reason i havent figured out yet the hotair machine does give less popcorning than ir, ive been using the machine for afew months now & i havent had a single chip popcorn, so that is why am saying less popcorning with the honton than with the jovy....its proberbly because the honton is more powerfull than the jovy, so the moister evaporates faster? but i dont know for sure,

just out of interest have you used the honton.