hi so today I'm gonna be going over a
motherboard for somebody who's actually
taking the class he brought it in it was
dead and I'm gonna go over what it is
that I did to fix it this is somebody
that I actually wound up firing about
three or four years ago and he opened
his own store since about three or four
blocks away and this is one of the
things that I want to talk about this
one of the things that I've brought up
before is you know should you see your
employees as competition should you see
your ex employees as competition should
you work really hard to not you know to
now let them advance or to let them
learn or to let them move on do the
wrong thing and you know he got fired he
got fired and he opened a store this is
the exact same thing that we do about
three blocks away and I don't care I
sell him parts I fix his boards he's
gonna be learning over the next five
days how to fix motherboards from me and
Jessa and me and that's what it is it's
like you know you people who are going
off the [ __ ] deep end about how
terrible it is that your employee
decided wait a second I don't want to
make $7 an hour anymore I want to work
for myself and make my own money how
dare you like go and all that [ __ ]
like you people who are going off the
deep end on that and how that's gonna
spell the end for your business
he opened a store like one or two years
ago I'm still here I'm still making
money
I still get dinner at Friday night at
Mazetti though I'm fine like I don't
care that somebody else is opened very
nearby and it kinda like it's that it's
that whole other that's stupid mentality
of like that person does the same thing
I do I'm going to hate them why is it
that the pizza really like why is it
that the owner of the pizzeria on this
block doesn't it doesn't hate the poner
of the pizzeria three blocks away why is
it that the Duane Reade person doesn't
hate the CBS person five blocks away but
why while the repair person on this
block has to hate the repair person
three blocks away or hate the repair
person eight blocks away or hate the
repair person ten miles away because
they're stealing my business again
business is just fine people are still
walking in I'm still fixing boards and
he's paying to take this class so I mean
really like that I'm making
money off of the relationship I'm
learning off of the relationship because
I got to fix something I've never fixed
that particular problem before I've
never fixed that particular combination
that I'm gonna be showing you so I did
learn something off of it you know you
just get out of this small-minded
simple-minded [ __ ] of this person
does what I do because they do the same
thing I do they are in direct
competition with me they're taking food
off my plate I must hate them I don't
care if you open upstairs for me I don't
care if you open next door to me I don't
care if you open over there I don't care
if you open in my basement I don't care
if you open in the street right in front
of my store I'll be just fine I don't
care really I have that level of
confidence that my skill set is worth
something that I know what I'm doing
that I provide a good service and then I
know enough about what I do that I can
transfer my knowledge base from here to
something else if this doesn't become
viable I am confident enough in that and
I'm sure enough of myself then I don't
care I'm not gonna I'm not splitting
hair isn't like throwing stones at
people because they opened up a few
blocks away am I going to help his
business for free [ __ ] no the glass
you're paying for that class the board
you're paying for that board repair but
am i again I mean I can have this
jealous silly mentality like he also
used to work for another repair shop in
the area and the owner actually came in
with it because he's across the street
from this place and it's like screaming
and screaming and bitching and like a
butt literally like trying to like rip
the counter out of it and just you know
that's the sign of an insecure
individual that's the sign of an
individual who's not really sure of
himself that's the sign of somebody who
who doesn't really feel like he has a
worth in what he does that feels like
maybe he got lucky
doing it and he's afraid that one day
that may go away rise again if you're
good at what you do and you're excellent
at what you do and you have a good
mindset you have a good attitude and
you're always open to learning new
things and you're always open to doing
new things you'll find it just doesn't
matter if you do the same thing as other
people so now that that little lecture
is over let's move on to the actual
border pair so today we're gonna go over
a retina that was not turning on I had a
few issues I couldn't I can't quite say
that I fully repaired it and when you
see what it looks like you'll understand
I'm gonna still be getting used to this
new microscope that I have here at least
until I get the whole thing with the
this
nothing here is stable I swear anyway
buddy I have to get used to the whole
it's all it's blurry on one side but
yeah this is pretty cool so I'm feature
videos are gonna be really really cool
once I get the whole microscope thing
situated because you're gay you're gonna
actually be able to see what I'm doing
but I'm gonna be able to see what I'm
doing too because usually I can only see
out of one eye and that sucks so we have
some [ __ ] going on here ISM I
haven't bothered cleaning any of this up
yet let me yeah you're right I gotta get
used to the new lever there we go all
right so adjustable zoom say see we have
that the Micra
that thing that's trying to give a
[ __ ] again see it's going down
down down stop but all microscope is
turning into BAM miley cyrus go okay
anyway so
we're doing oh you're doing it again
Amato makes some pretty kick-ass
microscopes they really do but this
stand like whoever came up with this
needs to be kicked in the balls
they need a girlfriend or something like
you can tell that they really need a
girlfriend er to get laid or to jerk off
because you're designing microscope
stands that just go right down on your
lap it's like is there something you
want to tell us about you want to speak
with the rest of the class like is it
something you'd like to tell the
therapist something missing in your life
maybe [ __ ] sake anyway see ya we have
a wire over there it's going to the
other other side of the board and it
don't look neat at all because it just
doesn't so you have you have it going
from there to there I'm gonna show it
that's four in a minute and then we also
if there's this that's not really
[ __ ] this this is [ __ ] [ __ ]
so this like yeah this here is we're
gonna talk about what all that shit's
for and what was going on with it
and why I did the things that I did
because this is not real time I think
I've spoiled all of you with the real
time board repairs okay so what was
going on so on this board I was going
through my list of power rails [ __ ] I
am sick and tired of being sick and
tired okay where's the power rail list
so one of the things I always tell you
guys to do is go through the list of
power rails and
it's missing why would you keep it on
page three like it's not like power
rails of the first thing you should
check it's not like you should put the
first thing you should check on the
first page No
Apple Apple has to put it on like page
or what is it on here 65 okay the thing
that I tell you is the most important
thing the thing that you're supposed to
check first is on page 65 the [ __ ]
schematic idiots you write this
documentation ja anyway but you know
that like technical writing that's
actually a job like this is not like the
engineer is going okay I'm designing the
board okay I want the SPI ROM chip to go
here okay let me just draw that no this
is somebody's job to do this they get
paid good money to do nothing but write
documentation and that dumb ass decides
to put it
I like the molle and the most important
thing on page 65 she's dumb just dumb
anyway I checked P P budge t3 hot it's
there I check avi I don't even bother
checking DC n bored because if I have
any power on the board obviously the
charger is getting to it
I check PP 3 before - it's there I
checked PPV RTC g3 hot it's there but
it's missing someplace but we're gonna
get to that in a second
I check PP 5vs5 it's there I check PP 5
es 4 it's not so my head I go thing we
don't have an S 4 power state I check PP
5 es so obviously it's not there because
you need PP 5 vs 4 before you get to PP
5 vs o so what these are over here these
are different power states from the
machine as 5 it's off s 4 it's
hibernating s 3 you're in suspense so
hibernate is when you save all the
contents of your computer to your drive
all the stuff that's in memory gets
saved to the drive then when you turn it
back on it just restores all that
information from me from the drive it's
slower than s 3 s 3 is where you suspend
you save everything in memory so usually
when you close your computer you're
putting it to just asleep that's suspend
that's an s3 state as oh is when you're
on and the computer is open and you're
actively using it so if you don't have
the rails necessary for s 4 you're
obviously not going to get anything at s
o
it's like you know it's like asking a
baby to run before the baby has walked
so then I check PP 3 V 3 s 5 and it's
there I check PP 3 V 3 S 4 and it's not
there and then this kind of starts to
click in my head okay all the S 4 power
rails are not I'm not clicking in so I
go or you know let's go and see what's
responsible for this
Adobe's on top today Wow your acted
actually you're actually acting like a
six core processor with 16 gigs of ram
and SSDs and raid zero
look at that it's like instant this is
never gonna happen again so appreciate
this I'm hitting enter in the PDF reader
and it's just bam bam bam bam this yeah
this this really doesn't ever happen
okay pp 3 b3 s4 comes from let's see
where does it come from so that comes
from pp 3 b3 rs5 so this here is a
switch that's gonna take P P 3 B 3 s 5
on input V n voltage in how to use your
brain again it's not all spelled out for
you but use your brain and it's gonna
turn it into V o V out which is pp 3 V 3
that's 4 based on s 4 underscore PWR
underscore and naval so on so voltage in
voltage out and do I turn on ya you
don't have to look up that chip you
don't have to get a pin out to
understand what it does it's got to use
your brain but if you can't use your
brain you can always Google TPS 2 to 9
to 0 and you might find information on
it so s4 power enable booth well is
created by this chip this chip is know
stuff ok next no stuff me that's
on the board which means that ultimately
I was getting trolled by looking at out
to begin with so so if the chip so if
the chip that's creates that signal
doesn't exist I'm not gonna figure that
out right now let's so I just go okay
let's try PP 5vs for their yard a little
bit because I was tired from spending my
whole day coughing look this is a chip
responsible for PP 5 vs 4 + PP 3 V 3 S 5
and P P 3 V 3 s 5 becomes PP 3 B 3 S 4
so you have to enables on this chip
right you have s 5 power enable and my
pp 3 B 3 S 5 was there then you have P 5
vs for RS 3 en that's one confusing
[ __ ] acronym but if you look up what
this chip does this side enable enables
this rail and this side enable enables
this rail so before I go about
troubleshooting this whole circuit
because this is a lot of stuff going on
over here and again I can make it really
simple for you if I have a few minutes
but I don't even want to bother with
that right now I just want to know
should I even be troubleshooting this
let's see if the enable signal is there
again before you go measuring all these
resistors before you start going down a
rabbit hole ask yourself am I going down
the right rabbit hole so why am I gonna
Matt why am I gonna [ __ ] with all of
this we didn't see if this resistor is 1
ohm and this resistor and then you know
like and this inductor is good and this
capacitor is good and this resistor is
why bother before seeing if the chip is
even being told to turn on so I check my
to try to get this out without coughing
p5 vs 4 RS 3 en and it's zero so I
wonder where does that come from because
that signal is what's going to be
telling what this chip to turn on that
power out what what is where is that
coming from so I searched through my PDF
and I see oh it's coming from here now
this is going through these resistors
and this diode that's not actually there
but they just put it there to [ __ ] with
me and this resistor it's coming from PM
sleep s4l so p5 vs 4 r
three underscore enable is coming from
p.m. underscore sleep underscore s four
underscore L so I measure p.m. sleep s4l
and it's zero so let's oh I'm tired of
the coughing so BM sleep as for L Cubs
fro my CP you remember what I said about
how on has well and above the PCH and
many platforms is actually integrated
into the CPU so the PCH or the mCP as
they used to call it used to control all
these functions in the machine like
powering on so they used to have the CPU
and then MCP or CPU and a PCH now to
make life easier and simpler they have
the CPU they have the PCH inside the CPU
which is why the CPU looks a little bit
bigger on as well
platforms and you can that's supposed to
come from here so my PC H must be bad
right because it's not creating that
signal I should just walk over to my BG
a machine and be a monkey and replace
the chip because the chip must be bad
right no use your brain that's one of
the things that I'm always telling you
here and that's one of the things that
just killed me a BGA culture because
again they got these forums that are
that are for nothing other than BGA chip
replacement they do nothing but you know
talk about how to replace BGA chips
nothing lay and all they know how to do
is replace
BGA chips the monkey can take the chip
off the board the monkey can reball the
chip the monkey can put the chip back on
the board but the monk you can't think
the monkey can't use his brain and
that's what I'm trying to get you to do
I want you to use your brain and I want
you to understand what's going on don't
replace things before you think so what
else could cause that thing to not be
creating what it needs well let's go
back to our schematic not the microscope
I said let's go back to our schematic so
we go over here
so how does this work so on the left
side for system power management we have
a bunch of inputs so power pit / okay /
okay Rissa marisa
Batlow all this stuff so we have a bunch
of inputs over here and then a bunch of
outputs over here without getting into
reading the documentation on how this
chip works without getting into any of
this a bunch of inputs on the left a
bunch of outputs on the right maybe you
need the inputs on the left to get the
outputs on the right right so I'm going
through all of these and I want to see
if anything looks particularly funny and
what I've wind up looking at is p.m.
underscore PCH underscore / okay p.m.
underscore PCH okay right PCH power okay
my PCH is what creates the sleep signal
and as my PCH power okay so I look in my
you 1950 area when you look in the you
1950 area instead of seeing a nice
healthy nice-looking chip you see
something that looks kind of like this
at least now that's what you see because
that's after I've I've kind of sodomized
it but but as you can see there's a pin
that's missing right over here that that
pad is gone this component that was over
there look like [ __ ] and if we go back
to the board view you'll see that right
all aware that's supposed to be let's
see what that pad is for that is
pin 8 which is pp 3v4 to underscore g3
ah so let's go back to the schematic
zoom in on this and let's start thinking
what is this what does this do well if
you google it you'll find out that it's
a logic gate but if you don't want to
google it you just want to use a little
bit of the brain you'll see that you
have a power line over here then you
have separate inputs and then you have
the output so the way this works is very
simple if you have peep you have this
input all says power good then it's
going to take PP 3 before to underscore
g3 hot and pass that through or it's
gonna become PCH sis power ok which is
what we want but unfortunately we don't
have pp 3 V 4 200 squared G 3 hot on
this chip because the pad itself is
actually burned and missing so what I
want to do is I want to go over to my
donor board and I want to get myself one
of those chips right remember what I
said about this business remember what I
said about how you're constantly a
dumpster diver and okay just to give you
an idea this is the board this is what
it's supposed to look like
it's what my donor board looks like do
you think I have the chip that I need no
I don't so [ __ ] off man Louis needs to
get health care you know this is this is
one of the things about that like I was
talking about how health care is
[ __ ] in the other video this coffee
may be annoying and it may be on like
week number two but the twenty five
thirty thousand bucks that I've probably
saved by not paying money into a system
that's designed to not give me that
money back I'll forget about these two
weeks I won't forget about twenty or
thirty thousand dollars because somebody
commented on that before it's I'll be
fine let's go back here
so what I did is I just took PP 3 V 4
200 squared G 3 hot and jumpered it over
to pin 3 over here so I don't care if
all says power goat or CPU VRP good or
there or any of these P codes are there
who cares
let's look see it even says over here
like do we need this do we need this nah
I don't think we need this they're
saying do we need this about something
else that's probably really really in
see like the Apple engineer thinks the
same way I do really like yeah like do
it like it really is it's kind of funny
reading this sometimes like do we need
this no and then I noticed after I did
that that it still didn't work so what
else does a computer need to run what
else is needed
hmm let's take a look in the schematic
and go through and try to think a little
bit about what else that you would need
for a computer to work but before I do
that let me reopen the PDF reader
because Adobe decided to go to [ __ ]
ah okay you don't get the block diagram
anymore
wow they used to have a bunch of little
cool-looking illustrations with arrows
going between them showing how
everything worked and that's just gone
they don't care
tell me that that little diagram is gone
because that was really helpful for
learning okay it's gone all right one of
the things that you need to know about
computers and I understand I'm good I
really understand if you don't know this
from the beginning and it's not
something you really can be expected to
know computers need a clock that's what
it is when I'm hitting this an open bra
when I'm hitting the shortcuts for open
broadcaster it's actually [ __ ] up the
PDF reader focus on that later computers
need a clock in order to work so you may
have heard about clock cycle or clock
rate or how fast the processor can work
but when something is communicating with
something else that's also done based on
a clock so if you have different pieces
of a computer that are talking to one
another
you need a clock so if you have a PCH
that's talking to other elements of the
machine or a PCH to talk slow BIOS chip
or PCH that's creating signals that
needs to be done on some type of a clock
and one of the clock signals that's
really important is the RTC clock so
let's see if my PDF reader will allow me
to zoom in again huh it is that's very
gracious of it thank you oh you decided
not to it is a here we go okay so every
I had control on a number it [ __ ] that
up I gotta look up why this doing that
later
PCH underscore clock 32 okay underscore
RTC X 1 BC 8 what the that's not what I
hit I had control F PCH underscore clock
32k underscore TC x1 and that's created
by you SiC 1900 so when I look in this
area
I have PPV RTC underscore g3 hot that's
a power L now there was actually present
on my machine it was present when I
measured the probe point up here it
wasn't present it wasn't present when I
measured right by over here and that
capacitor almost didn't exist and that
made me very very sad so I replace the
capacitor I replace the chip I'm not a
smoker either so lame and this is what I
get I should show you what the RTC clock
actually looks like it's something good
turn to no one yeah you measure it with
an oscilloscope you can use a frequency
counter a frequent but I have called me
nuts I when I'm I want to see things I
like being able to see things and keep
in mind like when I started this I
didn't have an education and how to
repair motherboards I was learning as I
went so I figured that if I can actually
see what was going on that it would help
me because I'm a bit of a visual learner
so you could explain to me how a buck
converter works into you're blue in the
face but when you explain you show me oh
it's a bunch of spikes and then zero and
then 12 and 0 and 12 and 0 like that and
then that that's that in it's switching
and then that gets turned on the other
side into a clean voltage when it's
averaged out it makes sense
even though it's a very very simple
concept you can explain it to me in the
classroom 50 times but when I see it
it's easy so people ask that was a
comment somebody made the other day
should I buy a
frequency counter should I buy an
oscilloscope if you're learning
I would I would just recommend they try
to find yourself a used Regal or I goal
however you're supposed to pronounce it
oscilloscope because it really does
assist in the learning process if you're
starting out it's it's cool to be able
to see things I mean it costs money but
the money that you can make the money
that you can get from people if you know
how to do this right is so ridiculously
high that it really does offset the cost
of tools like this that are gonna help
you learn so the cameras at the facial
focus so I've wanted to focus on the
oscilloscope I got to put my face near
the oscilloscope I don't feel like
getting off to adjust the focus right
now because I've been coughing my brain
out all day where is our TC which one of
these probes is our TC there we go
are you our TC
that's a clock signal that is not our
tea
it's one point one killer it's
okay which pro point was it you know you
know No
not even close why don't I just bring
the schematic and stop being a dumbass
it's true like men really can't ask for
directions like I could all I have to do
is put these two Pro points down and
move over to the [ __ ] board view and
I could easily find out where RTC is
after just a quick copy and paste
No I gotta be a man I gotta figure out
better so [ __ ] dumb man are so stupid
this really is the motherboard repair
version of just not stopping on the side
of the road to ask for directions okay
fine I give up I cave where the hell is
our TC somewhere over here of course I
find it right away when I click on there
I don't find that that's what kills me I
don't find it right away when I'm
actually looking forward and I've been
measured but I knew I knew that was
gonna happen I knew that soon as I the
first [ __ ] thing I clicked on that
board we was gonna be it okay so this is
what our TC looks like that is a bunch
of distorted [ __ ] right so let's
just that's a clock signal but focus on
the face focus on my face in front of
the oscilloscope see all right good
camera oh I see that is our TC and my
oscilloscope actually I set it to
measure frequency so it says 32 point 68
which is what I want but before when I
measured there I had nothing which was
my hint that something was [ __ ] up and
then after I measured and saw that I had
no clock signal I looked in the clock
area and I saw it looked like a corroded
pile of [ __ ] and then you know we just
go from there and as always I want to
show you that this thing actually works
but I'm not gonna be able to show you
that it fully works because it also
needs a bios chip programming I'm not
sure if it needs the chip replaced and
Pro and reprogrammed or if it needs of
this the or if it just needs to be
reprogrammed since this was originally
liquid damaging corroded I'm most likely
just going to replace it with a new chip
so one of the things that you got to
think about by the way that I've never
mentioned in these other videos when
you're dealing with Core 2 Duo platforms
replace the bios chip to your heart's
content
don't give a [ __ ] or worry about
anything when you're replacing the BIOS
chip on an i5 or an i7 or a core
platform one of the things that you have
to worry about is something called the
Intel management engine so that's the
part that we're you know the BIOS chip
or the efi rom the spi rom whatever you
want to call it is going
be talking to the PCH which in older
platforms is discrete and this platform
is integrated into the CPU and it talks
about a lot of stuff that's important it
talks about things like you know okay am
I gonna let the Wi-Fi card actually
working connect to network supposed to
just see networks and not do anything it
talks about stuff like should I let the
graphics chip run at a usable speed or
should I freeze viewing a 240p YouTube
video and you're gonna find that a lot
of people who are complaining about
their system running slow after doing
something like they a lot of people
gonna say oh well I had my computer
fixed but now it runs really slower I
fixed my own machine this is this is a
good one because I like I like talking
about things that are practical they go
you know now it runs really slow like it
works but when I go to watch a youtube
video it freezes and I'll just look at
them and I say okay so so you bought it
stolen right like no like okay so the
person you got it from what it's stolen
no okay so you're the one who stole it
because here's what it is these
[ __ ] on eBay what they do is they
take BIOS chips off of dead boards and
they sell them for efi unlocked because
the password isn't isn't the the SPI
Romney the BIOS chip and what they do
because they're ignorant [ __ ] that
are more concerned making forty five
dollars helping you work with the stolen
laptop than actually fixing technology
is they don't reprogram the Intel
management engine you need to have a
clean Intel management engine portion of
the SPI ROM or else this is not going to
work and the only reason that 99% of the
time that your average person is
touching that chip because let me tell
you something they're not touching that
chip because they're having problems
with the PM sleep s4l signal they're
touching it because they want the bios
unlocked so that they can use their
stolen laptop and the thing is they
don't know anything about the the
management engine region so what they do
is they buy that stupid chip off of ebay
from some dumbass who advertises that I
could fix BIOS unlocks and the BIOS
password gets unlocked but then it runs
really [ __ ] unbearably slow and it's
not a usable computer so what you need
to do is you need to reprogram it with a
clean dump and you need to rebuild the
Intel management engine there's a lot of
documentation on how to do that and it
all sucks it really does like there are
a lot of forums where they say we've
told you how to do this all you got to
do is read
it's right there and unlike unlike my
content where I'm literally [ __ ]
spoon feeding it to you that stuff it is
oh my god it is bad they like they miss
out on so much [ __ ] I mean really like
that if you find a forum that is good at
explaining to you our BIOS programming
works by all means like link it because
a lot of people are gonna need it it's
gonna help a lot of people and be nice
to them and donate to them and you know
really because when you get this stuff
there is no documentation for so many of
these programmers I mean it's you like
the programmer itself is so bad there's
no trackpad in this computer and look
what I can't wait that's that's that's
stupid anyway it's it's it's so bad this
that like you don't even know which way
to put the BIOS chip in like I remember
my friend got himself his own BIOS
program and he asked me your BIOS should
have been then he asked you have like 20
of these and what do you need 20 of them
for it's like I don't know how they
oriented in here and I keep sending 3
volts or something to the wrong part and
killing it it's really because the
documentation out there really really
really sucks and one of these days I'm
gonna get around to making a tutorial on
how to reprogram and how to deal with
Intel management engine of issues but I
just have too much stuff to do because
there's enough on my plate so I've just
been doing these these videos as is but
as you can see it boots you can see that
it's got that little little gingerbread
man thingy over there so which means
that I have I hate to call this fixed
this is more fixed than a reball GPU but
it's not fixed to my standard because I
have a jerry-rigged [ __ ] on there
but you can see that what I did actually
works and again as I always say if the
day that the work that I do stops
working stop watching my channel like I
own you know you want to be listening to
people who are doing work that actually
works you want to be listening to people
who are telling you to do something when
they are actually successful doing the
exact same thing that they're trying to
instruct you on how to do if your list
if somebody's telling you you here's how
you do X but they're not showing you
that they have run a successful business
doing X so that they have not
excellent 6x 2 ax ignore them if they've
had excellent success doing a be
everything from A to W but they haven't
had success doing X and they're trying
to tell you how to do X ignore them
really that's just one of my policies
and I want you and you should follow it
so let me just to go back over the
jerry-rigging portion because I want you
to know what I did so that you can um
not well do better over here I don't
have this chip I don't have you 1950 you
1950 is important because it's a logic
gate that's not going to let the PCH
turn on and do the things it needs to do
and send the signals it needs to send
unless these all system power good
signals are present and what I did is I
simply attached the power line for the
logic gate to the output of the logic
gate could totally bypassing it because
I don't have one of those because these
boards yeah like this this is what I'm
getting this is what I work with this is
how I professionally fix boards and our
lovely tech friendly marketplace this
and I've and I do a pretty damn good job
of it like you know you can google my
business I get a lot of these in and I
get a lot of these out and we handle a
good amount of volume and we kick ass
but like well not when people are asking
what is this right to repairable why is
it important this so when I need to
replace the SMC on that so you see this
board that has like this but you know
Oscar the Grouch like the Cookie Monster
[ __ ] bit the side of it out this is
what I'm using really this is what I'm
using this is my chip source and you
know today because I'm cheap it's
Christmas it's because the or where else
am I gonna find that stuff