do you really have you've got mail as a
ringtone all right so today we're gonna
be doing a little segment called
cleaning up someone else's mess and I'm
making fun of this because this came
from another store that did what I say
no other store should do which is try to
fix everything themselves and send it
here only when it's impossible there's a
reason for this we have something called
a no fix No Fee model and no fix No Fee
means if we can't figure it out we don't
charge you which means that if you send
us stuff that you've tried to repair
which means there's a lesser likelihood
of it being fixed or that you're only
sending us the stuff that's completely
impossible that's kind of a dick thing
to do in my opinion and damn I need to
put a dogecoin in the swear jar now so
and III think that that's kind of a
douchey thing to do and it's definitely
something that's gonna get you to the
bottom of the pile so this is a place
that is complained because this has been
here for a week and I have not even
looked at it yet and there's a very good
reason that I haven't even looked at it
yeah because it looks like this let's
just plug it in so that you can get an
idea of what it is we're looking at so
first thing you can see is the LCD
connector has been replaced now has this
LCD connector been vetted to ensure that
the pins are actually soldered to the
board not really they're barely soldered
every single one of these pins is being
held on there by look at this I can move
it I can move it this is this is sad
this is look what what what what is this
what is this why are you sending me this
why do you have a license to be in
business doing this why are you
advertising to customers that you fix
things when this is what you do to them
and it is okay if you screw up your own
stuff to be clear I have no problem with
you screwing up your own stuff the issue
is when you screw up other people's
stuff when other people are paying you
good money now let's take a look at the
rest of this board huh why is this not
here what what why is this not here why
is this missing why don't you put that
back like what why does the BIOS chip
have around it okay I see that
you've run wires in this area and you've
run wires for sensor issues but why are
you running wires
for sensor issues when the board doesn't
even have a brain yet so this is this
this is silly it's it's like focusing on
someone's we're gonna try our best to
make sure that you have 20/20 vision
while you you know while you're in a
coma the machine has no brain so let's
check this out so when you turn it on
it's supposed to do a chime right so
we're going to do a chime we're gonna
plug it in to see if we get a chime the
speaker is plugged in he's gonna turn on
our power supply here five four three
two one no chime so what does no chiming
no chime typically means no CPU vcore
and if we were to bring up the schematic
and the board view you'll see what this
means so we're just gonna open up the
schematic and the board view and the
funny the reason I make fun of this
business is because they're a business
that data they're doing that cheating
lame-ass thing with Google where their
their business name as a search term so
their business name is not an actual
business name their business name is a
search term and for all the updates that
they say they do to Google so that you
know people can't take advantage of this
for all the updates that are done to
make sure that you only get the most
high-quality search results you can name
your business name a search term open up
months ago and show up number one on
Google which is again kind of lame
justice I bet you let a student work on
that board time for class action oh yeah
for those of you who don't follow a jet
stream which by the way you all should
she has an excellent channel called iPad
rehab doing the same stuff we do except
on cell phones what what was going on
with Jessa was she was getting emails
from people that wanted to sue her
because she said I know why it took you
so long to fix this phone it couldn't be
because I sent to you something that was
the worst in the pile it was it couldn't
be because investigative diagnostic
repair I component-level on a device
this big with thousands of components
takes time it's because you saved them
for you to students to save money it was
pretty funny and I've always said that
when somebody threatens when a customer
threatens to sue you
in my experience that has always been
complete BS and an over-exaggeration
and i imagine the same is true with
jessep so if we were to get into the
real issue here let's go over something
called cpu v core now any of you who
have ever overclocked
a computer before know what CP UV Korres
CP UV Corp is the voltage sent to the
CPU to power it and typically if you're
overclocking you would raise CPU v
course you have a little bit of an
understanding and CPU v core in this
machine is controlled by u 7400 and you
can see over here it says CPU v core
regulator and under it you can see that
this controls a buck converter and to
define a buck converter a buck converter
is going to be something that takes a
higher voltage and turns it into a lower
voltage the way it does this is by
cutting it up into pieces so let's say
we have 12 volts we want to turn it to 1
volt what we're going to do is we're
going to take the 12 volts and send
through a little bit of a tiny spike
we're gonna say ok here's some 12 but
then nothing
and then here's some 12 and then nothing
and it's gonna go back and forth back
and forth between 12 and nothing and
that's going to average out to something
like 1 but the CPU doesn't like that the
CPU is not gonna like getting 12 and
then 1 + 12 + 0 + 12 + 0 + 12 + 0 so
we're going to put it through an
inductor which happens over here UCL
7510 is an inductor that's going to even
out and smooth out the spikes and then
it's going to go to hundreds of little
capacitors which are going to be used to
smooth out the line and we should find
that somewhere is gonna be a page where
you're gonna see nothing but a bunch of
capacitors on a line I'll try to find
that here mic crackle someone says oh oh
boy okay now I get it one sec
all right so hopefully that sounds
better do you let me know if you hear
any crackling hopefully the crackling is
done sound sounded better
let's see anybody I can trust in the
chat that give me an honest answer t CR
s Jessa is it sounding better or still
crackling miles I trust you two miles
Jessa what do you all think alright I
can trust you guys who say it's not
better if something happened to the plug
on my mic that I sought it on there it
has started to shield start to come off
anyway so if we were to scroll down
you'll see that PPV core SOC PU has
hundreds of these little capacitors that
are going to be used to smooth it out so
we're gonna get a nice even easy breezy
one volt and you 7,400 is going to
control this so let's just go over the
board and see on the schematic and the
board view where it is we would find CPU
v core so it looks like this is a great
spot to check it so I'm gonna turn it on
and we're gonna check for CPU v core
right here PPV core SOC PU at C 1680 so
let's turn on the power supply and see
what we get measured with voltage and as
you can all see we get zero point zero
zero volt so zero point zero zero volts
going to the CPU is gonna give you a
very similar effect as when you send
zero volts the brain of the individual
that tried to work on this which is the
brain is not going to work and because
the brain is not working the brain is
not turning on the CPU is not turning on
we don't have something working so now
what we need to do is figure out why
that is so if we go over to you yeah
stupid microphone thing I gotta get
another quarter eighth inch plug one of
these things to plug into my wireless
thing boo yeah let's see what if I just
I'll put this in my maybe in my pocket
or something so it moves around left
I'll put it on the chair so it moves
around less hopefully that'll make it
sound better anyway so what we're gonna
do is check out what's gonna cause
something like this to happen so
let's open up this PDF and the first
thing that I would ask or the first
thing that I would address your
attention to is the fact that this chip
is designed to be used on multiple
different machines that have multiple
different power rails so you 7,400 is
being used to have 12 volts be turned
into one volt but this same chip gets
used on machines where they're trying to
turn eight volts in a one volt it's used
on machines where they're trying to turn
15 volts into one volt it's being used
on the so this chip needs to have a some
way of understanding how long it should
be on for so if we're trying to turn 12
volts into one volt we're going to let
through less spikes than we would if we
were trying to turn eight volts into one
volt and we would use less spikes to
turn eight volts in a one volt than we
would to turn five volts in a wonderful
it's just common sense that if we're
doing averaging and we want to get one
volt and we're we're choosing between 12
and 0 and 12 and 0 or 8 and 0 that we
would have more eights unless zeros if
we wanted to average out to 1 then we
would if we were doing 12 and 0 so this
chip needs some way to tell how often
should I be on and that's going to
happen at something called the time on
pin so here you have CPU I MVP so CPU
voltage T o n time on ton time on a in
time on B and here you're going to have
a resistor that sits between time on and
the main power rail which over here is
PPE VIN CP SOC py MVP that is going to
be used to create the CPU v core so if
we go to the second page these
transistors are doing the job of
switching these transistors are going to
be switching up and down so Q 7510 is
going to be switching PP VIN CPU I MVP
which is twelve point six volts it's
going to be switching that so sometimes
you're going to get 12 volts going
through sometimes you get 0 sometimes 12
sometimes 0 so this is the main power
rail that's going to be used to turn it
into that's gonna be turned into CPU v
core now this needs to know how often to
be on if we're in if we have a higher
voltage it's gonna have to be on less at
the time to get to 1 volt if it's a
lower voltage it's gonna have to be on
more often to get
- one volt so in order for you 7,400 to
do the calculation to figure out how
often does this transistor have to be on
for us to get an average of 1 volt out
of here it needs to know what this power
rail feeding transistor is and that is
going to come through via PP VIN SOC Pui
MVP going into the time on pins now if
we were to take a look
PP VIN SOC Pui MVP if we were to take a
look at what's gonna be feeding that r7
403 and r7 402 on the board view
software r7 402 and r7 403 are right
over here
and I'm going to bring them up on the
microscope so that you can see them and
as you can see there is solder and there
is flux in that area indicating that
someone did either replace them or touch
it up and there was some reef lowing
done in that area and I'm gonna show you
why that is clearly mindlessly flowing
so if we look these are this is supposed
to go to the chip and those pathways
seem to be okay they seem to have been
redone in some way but the other side is
supposed to go to pp bus s 5hs computing
I sense which I'm guessing is tied to pp
even SOC Pui MVP let's just confirm that
I'm not talking out of my rear end with
that one so if we go to the power
delius's page as you can see pp bus s 5h
as computing I sense is also pp even SOC
Pui MVP so they're essentially the same
thing
so these resistors for time on need to
be attached these needs to be attached
to this right now let's just take a look
under the microscope and see if that's
what's going on so if we zoom out on the
microscope you'll see that this entire
section of the board is ripped off and
the only reason that I can imagine it's
ripped off is because the person leaving
this stuff off here is an idiot so this
needs to attach to this and this is all
like what is that well that doesn't seem
to be something that's attached this
seems to be something that got entirely
ripped off of the board so we're gonna
try and tin that and run a jumper wire
and pray that fixes our problem and I
also have to be reminded to buy myself
one of those Sennheiser Athens
adaptors for this microphone so that it
stops crackling all the time look maybe
I also lost that little thing that
allows it to see if I can find that I
have one of these little adapters that
allows it to like you know stay on your
belt so you know I have another one of
those here we go yeah I'll just steal
one of these things
damn that's stuck in their heart what
oh it's beeping whoops I've actually
gonna learn to teen tune that out okay
my hands are unable to get that
little plug off so never mind we'll
solve that later I'll just carry this
thing around for the time being
so this point over here on the right
needs to get attached to these two
resistors so first thing I'm going to do
after that scraping is add a little bit
of flux because that's going to help the
solder flow in that area
and then we have to what run a wire to
those resistors and keep in mind this
doesn't have to be a really thick wire
we're not you know again these are a
hundred fifty kilo ohm resistors it's
not like we're using a bunch of power
here this it by no means needs to be
something that's capable of handling
large swathes of electricity Hey yeah
sorry about crackle
I have to reball my microphone
all right so that's connected now we're
gonna see if we have CPU v core when
this turns on or if it blows up it could
always blow up you never know
now the reason I'm doing that before
touching up on the LCD connector and the
other stuff that was taken off for no
good reason is because I want to know if
I'm wasting my time entirely by working
on this which I probably am but I want
to kind of gauge that
so we're gonna measure CPU vcore at
those capacitors below where it shows up
interesting so we're still getting zero
votes let's see if we're at least
getting the 12 volts that we're supposed
to at these resistors we're getting one
so that's one point 35 volts so this
point that got ripped and destroyed off
of the board is - destroyed for us to be
getting any results there so it looks
like we're also getting the exact same
signal from here so I'm gonna try
running the wire differently and this
way I actually also just broke off yeah
when I soon as I touched it what we're
gonna try running it from here because
this point over here is only getting one
point 35 volts up here we would be
getting something more because that part
of the board seems like it's still
attached properly
right it's gonna 10:10 that up we run
another wire it'll rip that other one
off in the in a short second
it's good tweezers to make that neater
make that wire nice and flat
I'm gonna solder it down here
okay
it's gonna get rid of the excess over
there and we're gonna turn it on and see
if we get any different results this is
how you repair motherboards question
mark yes it is
yes it is okay so now let's get the
multimeter back on the screen and
measure the voltage at CPU V core down
here and see what we get and hopefully
now we get a big good result since the
CPU I MVP time on is gonna be where it's
supposed to be twelve volt and we get
zero point zero zero volts well that's
interesting now let's just make sure
that we're getting 12 volts here Oh like
I think we're supposed to be getting and
we're getting zero and there's zero
volts over here now this is really
interesting at this point because
everywhere on the schematic and board
view that it says this is supposed to be
showing up PPE bus s 5/8 ands HS
computing I sense we're getting zero
volts and we're supposed to be getting
12 there so our issue at this point
seems to be when this was ripped up this
is gone from all parts of the board so
now we have to figure out where this
originated from so the question now is
gonna be where was this originated from
so pp bus s v HS computing I sense so
we're gonna have to look that up over
here and see where this originates
because apparently when that section got
ripped off the board something happened
mark says hi I'm mark from the UK I like
to watch all your videos well thank you
for the 5 pounds I really appreciate
that
that makes doing this myth miserable
stuff slightly better so we're gonna
find where that comes from and it seems
like what why is it only showing here
why is it only showing that surely that
has to show up somewhere else that's BS
that's total B all right let's just try
shortening it a little bit
okay so it looks like our 54:10 is
sitting between pipi bus g3 hot and pipi
bus s 5hs whatever that so let's take a
look at our 54 10 where would we find
that so it seems that our 54 10 is a
current sense resistor where this goes
in and that goes out and PP vin as i've
HS other i sense is actually going to be
pepe bus g3 huh we're gonna continue
down the rabbit hole here and just to
see if this is what is even remotely
fixable before firing this person is a
customer entirely so let's take a look
back at our board view software and find
our 54 10 now our 54 10 is going to be
on the other side of the board so let's
just take the board out of the machine
and go from there where do you get these
schematics I get these schematics from
the internet the internet so the
internet is a crazy place I actually
talked a bit about that on Pennsylvania
Public Radio somebody came to interview
us yesterday very nice person now if we
look you'll see that there is a resistor
that has a bunch of wires going to it
and these wires are all not shielded at
all and they're going over other probe
points because you know because well who
the heck knows so let's work on figuring
out that mess so this that's all for the
sensor issues and of course we must
solve sensor issues before getting the
machine a boot that's totally the right
order within which to work on this so
let's see if what we're getting on each
side of that resistor
we want to track down where pipi bus s
5hs other eye scents went missing
because it's missing from the retina
board so let's check here and it looks
like we get 12 point 6 volts on the side
and 12 point 6 volts on that side which
means that I'm gonna have to attach a
wire between there and this point up
here because it's missing entirely from
this section of the board due to these
completely ripped out sections that will
ripped out because idiocy again how do
you how do you do this how do you have a
license for a business and do this how
why what is this what is this this is
not necessary this isn't even long screw
I mean on an iPhone on an iPhone you
would be dealing you could get long
screw damage and I get maybe you put the
wrong screw in the wrong hole it happens
every now and then and and fine but how
how do you do this I don't know I don't
get it so anyway we're going to run this
a wire up to there so we're gonna have
to run the wire from the left side
that's the side that's gonna be P P bus
as 5 HS of the rise ins and we're gonna
run that wire around the board over to
where it's missing and again it doesn't
have to be the thickest wire in the
world it doesn't have to be a thick wire
it's really not gonna be used for much
of anything I also want to be careful
not to screw up any of this wiring over
here that's already existing and and
okay add a little bit of flux to make it
nice
Thank You aunt absorbance in the twitch
chat I appreciate that
okay so we've got the wire tint now I'm
just gonna grab it by the tweezer so
we're gonna grab it by the tweezer when
you're as good at board repair as I am
they let you do anything grab them by
the tweezer and we're gonna run that up
here we're gonna make a couple of stops
the wire is gonna make a few stops and
of course it's gonna be shielded along
those stops because we're not idiots
so that wire is going to go to each of
the places that I expect it
pepé bus s 5h high side computing I
sense to be on this board that we're it
wasn't and its first stop is gonna be
over here
and its second stop is gonna be over
here
get that other tangled messy wire out of
there
hello Vladimir
people also if you can do me a favor
since I'm very forgetful please remind
me to buy a replacement plug for my DPA
microphone
solder ball Sennheiser eighth inch plug
since I know I'll forget you can get rid
of this crackling and one of those
little mounts for it to go on your on
your waist I miss being able to have a
belt buckle with it so that's all set
and done so now we're gonna turn it on
and see if we get cpu V core and I
really hope we do after all this work
because if we don't then it's time to
start calling it quits so it's turned on
multimeters on we're gonna go to the
area where we would expect CPU v core to
show up and and really still nothing ok
let's see are you turning on where is
fan connector fan connector here yeah
you are turning on because you get 5
volts at the fan connector alright so
are we getting 12 volts over here after
running that wire and now this is
genuinely interesting it says zero so
that this wire ah damn okay admittedly I
did something stupid when I ran the wire
it broke I pulled it a little too hard
alright
can't call out other people for being
dumb when I do something dumb now can I
so that was dumb that was incredibly
dumb I should for this wire perhaps I
should be using something a little
longer I mean a little wider you
definitely need a wider wire so I'm
gonna grab some higher gauge stuff that
maybe just a little bit more adorable
for that run
okay
all right you just do this again this
wire is a little bit thicker this time
there's also the chance that this
section of the board is actually shorted
to ground if that's the case then this
is just a complete and utter waste let's
just check that first because that would
be funny somebody Vladimir made a very
good point that that could potentially
just be working as a fuse because if
this section of the board is shorted to
ground as a result of the idiocy of
ripping up pads then we're done and it
looks like it is so that section of the
board is actually indeed shorted to
ground so I think that this is about
let's see so this may all actually be
shorted to ground as a result of
somebody ripping layers out of the board
and if that's the case then I'm taking
this and the other four machines that
this jackass dropped off and shoving
them in the and just telling him to pick
this up and don't come back so
let's see if that's the case so are the
inputs to my CPU I am VP ton resistor
shorted to ground okay so they're not so
the pathway that would usually be for
them is so all of this section over here
is shorted to ground so there's a chance
that this board is I don't get what you
don't cover the entire board and liquid
metal instead of running these why no it
makes sense alright so it seems that
this section is shorted to ground there
is no hope you so what I need to do is I
need to bypass this by running the wire
directly to the to these two resistors
which is what we're gonna do now since I
don't see I don't see you're right that
wire was not broken by me that wire was
broken by the fact that that section of
the board was shorted to ground so we're
going to rerun this and we're just gonna
run it directly here we're not gonna try
to fix the paths because the paths are
broken for a reason hi I love watching
your video dammit that disappeared
really fast I can't see yeah we're let's
see you read that
coins in the dough jar yeah I got to put
some coins in the dodge jar I don't
think I'm probing the wrong pet seems
like that's
let's see I love watching your videos
they help me sleep keep doing what
you're doing you do also hear about the
new meme do you know the way it's really
funny okay I haven't seen that thank you
for the 5 ok so now we're gonna see
we're gonna try and put the right wire
in the right place and hopefully it
doesn't burn this time I'm gonna try
grabbing the wire by the tweezer rather
than by grabbing it by the hand this
time
ah this is painful
okay that wires there now we're gonna
run it where it's supposed to be and
we've already checked at that part that
set of resistors is not shorted to
ground so where we ran the wire to
before was this is not so I should be
able to safely run this wire without
having to worry about it breaking as a
result of being used as a fuse
oK we've got that rip off the excess
grab it by the
okay now let's run this take four okay
we're gonna go back to where CPU V quois
should be get on that multimeter plug in
my power our power R and get to
measuring CPU vcore okay I think we got
CPU V core because the power supply says
we're using point 2 amps more than we
were before and it looks like uh turn it
to voltage mode it looks like we are
getting zero point eight to nine volts
at CPU v core so problem one has been
solved CPU v core works the brain of the
computer works which is more than I can
say for the original tech now the next
set of problems we're gonna have to
solve is related to no image well you
may say how do you know you're not gonna
have an image well that's a good
question the first way that I know that
we're not going to have an image is that
the IC responsible for powering the
screen is not on the board and the
second way I know we're not gonna have a
screen is that this pathetic attempt at
replacing an LCD connector by is is not
even soldered again this is not soldered
like again if you're trying to do this
on your own machine I would never ever
make fun of you but if you are a
business that purports to be charging
money to do this under the guise of
being an expert at it then this this is
utterly shameful and despicable and why
customers do not trust people that work
in at repair stores or handyman or
plumbers or electricians or mechanics
it's because of junk like this this is
why customers have no respect for this
as a business so we're going to try and
make this great again
ah now that is great look at that look
at that beautiful pads look at those
beautiful tampons
I mean maxi pads I mean oh crap oh no
all the feminists that came after
lioness are gonna come after me now poor
lioness poor guy
poor linus i feel bad for him for that
hi Jen I don't think he had even the
slightest clue what that that was gonna
be the reaction to what he said he was
my contribution here success Lois you
can't have made a positive difference in
my life and I want to thank you I'll be
sending you a MacBook to fix at some
points as Tyrannosaur thank you very
much that is very kind hopefully you'll
be able to fix your own MacBook from the
stuff in these videos and maybe save
some money okay so we're gonna find a
new one of these ICS and put it there
the absurd off' occasion for replacing
LCD connector I do not have
certification for replacing LCD
connector
oh that's the ultrasonic back absent
ASMR doesn't that ultrasonic sound nice
alright so now the fun is gonna be
finding a board that still has you 9000
on lo this board still has you 9000 huh
what do you think the chances are we're
gonna have a working image circuit
what are your guesses
I was watching this one channel I think
many people will find funny called
freedom tunes and I think that's what's
gonna be what fixes this AI every
generation appears to laugh or think
what the last generation did is
ridiculous and I remember growing up
with my generation I remember was like
and I just never imagined that our
generation would be the generation to do
things like what it did to lioness over
him doing a video about the Amazon store
but I genuinely think the next
generation is gonna look at all this
and just laugh and laugh and laugh
and I think that's gonna be how this is
all fixed
freedom tooms has some really funny
stuff like getting kids engaged you know
on the level of laughing at it I think
is what's gonna what's going to fix it
so okay so we've got our pins soldered
we have our replacement IC on there and
we're just gonna make sure that little
trace nice and pretty we're gonna do the
tweezer test on each of the pins to make
sure that all the pins are soldered to
the board not that I need to because we
do such perfect soldering yeah such
perfect Victorian soldering and we're
gonna see if we get a picture now on
this complete pile of garbage so what do
you all think what do you all think is
gonna happen you think it's gonna work
I think it's gonna be amazing do you
think it's gonna be dead I think it's
gonna be amazing
I think that here we have the power to
bring back even the most abused little
boards that didn't deserve it you poor
little 31:15 show me where the bad man
touched you mister 31:15 will make it
better we will make it better okay so
it's plugged in turning on and we have a
light on the screen
see you have a light on the screen it's
gray it's gonna turn to a question mark
soon I'm not gonna keep it on long
enough for that because I didn't connect
the heatsink because it didn't come with
a heatsink actually maybe I will leave
it on for the question mark to come on
you didn't give it to me with the
heatsink I guess you don't want me to
test it with one that's the only
assumption that I can make here and we
get a question mark falter which means
this poor abused raped beaten and
battered little board has been made
great again that's what we do here at
Rossman repair group if you want to
watch more videos just like this one you
can check out the playlist on our
channel component level board repairs
and also live stream board repairs we
have another 600 repairs just like this
if you want to buy the tools that we use
you can check out this little
advertisement below and go to that site
if you want to know how if you're in the
business of doing this and you're just a
little bit confused you've made your way
through some of it you have a pile of
boards and you just want some questions
answered quickly you have a form that
you can check out at Rossman group.com
slash boards $29 a month to have an
engineer answer all of your questions
that's it for today thank you for
learning and thank you for watching and
as always I hope you learned something
and to the place that did this I hope
you go out of business