so a short while ago a gentleman by the name of Ls Rossman watched my video
where I baked a video card and made a video response outlining what an idiot I
was he said a lot of bad words and a lot of mean things very often the issue that
somebody's having when they have no video or something is dead is not an
issue that you're going to fix by taking a heat gun to it by putting it into an
oven by burning it so I showed up here
in New York City at his shop to either
get an apology out of him or for him to
restate that in fact he is right and show me his super fancy soldering rework
multiple thousands of dollar setup that
is actually how you repair graphics cards or other pcbs properly let's find
out which one of those things it's going to be
okay so uh employees only means nothing
to me so I guess we'll just uh go ahead and head
inside look at all this stuff it's like Linus's Paradise broken
Max knock knock come
on so uh here we are the way I see it
there's uh there's a couple of uh there's a couple of options here you can
either apologize and say I was right and you were wrong or there's the much more
likely scenario where you show us the super cool piece of Machinery that you
use to properly repair all of this stuff
uh so this is Louis say hi to the lineus tech tips folks I'm sorry for your right
hand too oh yeah no no that's no problem
so guys this right here is where the
magic happens one does not repair pcbs in an oven one uses one of these that is
to say if one can afford it how much does one of these cost about $7,300
about 73 $100 and LS here is going to
walk us through the ins and outs of how this bad boy Works including you said
you obtained a donor board do I actually get to operate it oh yeah you're the one
who's going to be putting this on that's the whole point of having you come here was to reduce my workload fantastic
let's do it okay so I think we all saw this coming um he's not apologizing and
he is definitely showing me how to do it the real way so this right here is a PCH
that was sourced from somewhere cuz you can't actually buy this stuff directly
from the manufacturer that's one of your frustrations right incredible so maybe
it works maybe it doesn't and then behind me we've got a PCB from a main
board that was literally thrown and had
its PCH pop off so without knowing if
that works and without knowing if this works we are going to resolder this BGA
chip onto that PCB I'm going to do it
and it is not going to involve an oven and it is hopefully going to going to work but if it doesn't then that'll be
pretty fun yeah it'll be fun either way
okay so Step One is we want to tighten up these little retainers that use the
mounting screw points and without uh ruining it too hard that use the
mounting screw points on the PCB to hold it in place as securely as we as we can
next we pull out this Fancy Pants camera
so we get a live feed right here of the solder points on the main board next
step we turn on the manual vacuum right here we take our PCH we Orient it
correctly which I mean is there some guess work involved there Google image
search and try to find the GIF that's above 50x 50 pixels like I did 5 minutes
before you came here perfect so we put this sucker on the little vacuum right
there hoping that it doesn't come off there we go so we've got a ring of LEDs
on the top we've got a ring of LEDs on the bottom that makes sure we've got
great aluminum from all angles both down here and up here and then what we've got
on this display are two superimposed images so the Brown version is the one
below and the Blue version is the one above and the idea is that we use our
horizontal and vertical adjustment knobs here as well as our angle adjustment
knob right here to try to align all the
blue dots with all the brown smudges below
them uhhuh so as soon as I align it
there it stops Al lining up there feel free to step in and correct
what I'm doing at any point in time let's see you can give yourself more
light so you can see a little bit hey there we go you can zoom in and
out you got a Joys how far in can we go
I honestly can't tell but you have no way of checking if it's right until you
just yeah you don't know if it's right until you put it on I'm just looking at one corner at a time so I see that one's
the line yeah and the other this one looks okay this is a pain in the ass
this part really is just a pain in the ass so is this pretty aligned that's
pretty aligned I would say okay just get yourself a thin layer of flux on there
gloves and a for the next step we will need Z gloves so now we put uh just a
line of flux just right down the middle yeah so with the flux in place we use
this clean room wipe as you can see we are in a completely professional clean
room environment here so now we've got to check and see if our chip moved out
of alignment from messing around with it this thing messes with your eye after a
while man let me tell you are we back on
I think that's actually good okay I would say this is good okay so next we
move our light out of the way and we actually lower the
chip whoa that goes really F oh uh it's
going to stop oh jeez okay see see right now it's touching the board once it's
touching the board then you turn the manual vacuum off and then you go back
up okay so now you can move the camera around and try to get it to focus so
you're you're almost in Focus okay there you go so now we can can see the balls I
can't I can't make heads or tails of this image though you got to be kidding
me here okay the point of this is just
being able to see when the solder melts so this allows us to see under it enough
to know when we should apply heat and when we should stop applying heat to
solder the connections okay so Hit Me With Your
Best Shot you hit start and you hope that nothing blows up seriously pretty
much so at this stage we're actually ready to use the information heating
elements all around to heat the general area and then the two heating elements
on the top and bottom to solder the chip
to the PCB but it's not as simple as
just 200° C in a oven which I noticed
they have an oven this is high quality right here yeah I I noticed you you do
have computer parts in your oven was that just to make fun of me when I got
here exactly um what you do is if you want to clean them off after you're done
Ultras sonicing it you put it in here to get rid of the moisture before you do
anything like this you also have to put them in an oven at just around the
boiling temperature of water just to get rid of any of the moisture that built up
in the chips but also you get things like popcorn and there I thought I was
getting my apology after all all right so what we do here is we have these
profiles and it comes with some pre-programmed but they're not very good
so you kind of have to trial and error it or use your experience or share share
online to figure out what exactly the temperatures are for the period of time
and the ramp up and ramp down for each of those those three heating elements
and then once you've got a profile you press start and hope nothing catches on
fire and hope that the solder
melts so once they melt if the profile is set to run a little long we can
manually stop it and then start a manual cooling cycle in order to cool
everything back down to a reasonable operating temperature wow it's really hard to tell
so is it is it is it is it melted stop
so we're stopping it now we're deciding it's melted even though it's really hard to tell okay manual Cooling and now you
get to watch the balls dry okay it's important to dry off your
balls when you're done any kind of uh repair on
them so now that the cooling cycle is done we lift this bad boy up is that all
it lifts up oh there it goes then Mr
shark grabs a PCB and whoop whoop come on and put it uh that was it we're not
going to let it cool down some more I want to take a look at it first this is
the part of the class where the teacher is like you know oh this part's kind of
good but this is but your attendance is excellent the
suspense you want to look on that one hm
you want to look and see what it looks like sure yeah let's do it all right so
let's have a quick look here so what we're trying to see is whether the balls
got soldered to the pads uh your guess is much better than mine
at this point in time let's see if it works so we're just going to fire it up
and YOLO yeah so here we go Moment of Truth we're going to find out if a fan
turns yeah come on baby I Believe In You
H oh we got a flash of light
and we've got 5 volt so it's powered got
3.3 volt on another test patch yep no good oh now you have this
my my bad luck rubbed off on me
we didn't fix it but um test subject 17A
contributed to the betterment of our scientific knowledge in some way that
who am I kidding we didn't learn anything today it but uh thank you guys
very much for tuning into this episode
of how according to Lewis Rossman one
would actually fix something that had
been if it had been damaged
by you know something like micro fractures in the solder joints or
whatever the case may be because remember whether it's a GPU like I very
temporarily resurrected in the oven because that won't last very long
whether it's a GPU or whether it's something else there's a hundred things
that could be wrong with it other than that and you actually have to know
what's wrong with it before you can attempt any kind of repair so while I
actually stand by the oven method as a way to put off by buying a new video
card while you save up for another few weeks if you are completely out of
warranty and you don't happen to have a $7,500 rework
station it is not the real way to actually fix anything and I'm glad that
I got to at least try to do it properly so uh thank you very much for going
through this process with us and uh being a good sport about the whole thing
and thanks to you guys for watching whoa I transported back to our
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link in the video description remember guys if you dislike
this video go ahead and hit the dislike button but if you liked it hit like
leave a comment saying hi to LS you could do that too you can also check out
his channel he's got a lot of videos that are uh basically tutorials about
how to repair your stuff uh rants about Apple and the way that they lock out
small repair shops from being able to repair their products whether it's
refusing to put alignment guides on their PC whether it's refusing to
provide uh pin outs for the chips whether it's refusing to tell you what
exactly some stupid unlabeled thing is um or whether it's just their business
practice in general he's got rants about me so if you're into that kind of thing
he's got at least one really good rant about me and what an idiot I am so uh
check that out and also don't forget to subscribe uh don't forget that if you
like our videos you can hit the like button on it you can become a
contributor you buy a cool shirt like this one you can use Amazon uh with our
affiliate code so we get a small Kickback whenever you buy stuff or you can even give us a directly monthly
contribution through our community Forum now that you're done doing all that
stuff you're wondering hm what should I watch next maybe check out the video
that started this whole controversy where I baked a video card and uh did
manage to resurrect it however temporarily it might have been and made
this gentleman mad in the process so mad that I had to come all the way here to
New York to make him feel better hopefully that's not how you feel better