alright so today we're going to go over any 20 30 2009 it doesn't turn on so
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today I want to show you how it's really important to know where the original
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damage occurred so that you can figure out problems that would otherwise be a
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complete utter nightmare so when you look at the actual machine itself you're
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going to see that there are these little marks and they look like pidgin little
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stains of pigeon shit that you would see on the sidewalk and if you look at it
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under the microscope you gonna see this really helpful if the board is cleaned
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before you look at it and have no idea where the original damage occurred so
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when I look at it under the microscope which is getting focused so I have some
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here and that's the pigeon shit looking stuff that I'm talking about and then I
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really made when I am interested in is this one right over here so what I do is
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a look at the I'm gonna do them in a look at the motherboard in those spots
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are again this is a board that was fully cleaned before I got it so it's great
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because I don't actually waste time ultrasonic in dealing with all that ship
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but the downside is I don't know where the actual problem is and it's it's
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gonna take a lot of inspection so but knowing without was gonna do something
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to match up the little spot of pigeon shit on the board with this and what I
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see is this and you can see you can you tell it it's this is something that I
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would miss going over the board of my side probably never ever see this but
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now it's really obvious that there's a problem here with this I see so what I'm
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gonna do here's I'm going to go over to the boys your software and we're gonna
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check out on the board via software what that is and what that does when I go to
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the bushes software what I see is getting back into view this body
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software is crap sure any of you have been doing this fully aware that the
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see i dont give a fuck about your birthday so crappy screens go I go
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Pacman this morning as I usually am so many of you 7100
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this program is sucking more than usual which is people five year so I knew 7100
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so this chip you 7100 here this trip is responsible for creating an S O
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PowerShell of PPV ccsa underscore sooo underscore wreck so let's just see where
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this is responsible for so this is created by you 7100 look it goes to our
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7142 no real idea so let's see I'm here where that goes of course not found
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probably called something else on here
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prices will be getting some addicts says that you should find that I seventy 140
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so let's see what that is over here that looks like a current sensing resistor
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for this ok so they call it something different over here go fucking figure
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looks like something goes to the CBO yes you could see or hear that this is
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pretty much used for the CPU now the problem here is 11 SRL that's that i'm
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gonna take a wild guess that has a real is missing because that ship is actually
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burns so you only go back to you 7100 on the schematic you'll see that you 7100
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that pin pin that's burned is one of the VCC pins over here that's required for
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this trip to actually turn on and this chip is used to control this buck
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regulator which is going to take buck converter technically which is going to
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take this higher power over here people use in soo VCC si whatever and it's
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going to turn that into this PPV ccsa also read rail take a look at where that
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comes from so this comes round PPV blah blah computing I sense that comes from
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people but she three hard as you can see so let's say we just take this is the
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rail that's a subway love this one we take that real and we see that that real
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is actually has a summary of this one doesn't have high side computing I
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sounds the same sure that it really is the same shit like this is the same as
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this which is the same as this so if this thing does it takes a point four
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bolts fix a point for all concerned that and whatever voltage the CPU once again
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we can take a wild guess that PowerShell is missing because he is the one that's
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very that's a VCC pin as explained that other videos the VCC pin the VDD pinned
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via Pin whatever that is
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think of that like the pins on the back of your soldering station where you plug
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the icy court in to turn it on so this is where you're expecting power input
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and power inputs not there for the first thing I want to do here as I want to see
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is the board actually in in a state and as for state and its five-state what
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power status so sooo is again keep in mind all these qualify by seven Series
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MacBooks their design turned on from the second to put the charger so as soon as
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i plug the charger in I should it should turn on the fans it's been a should
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start seeing as all rails become president 2012 see what state I'm in and
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work my way down so what I'm gonna do over here is gonna see if I haven't SRL
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present let's go back here and this search for that search RPP 5 ESO and see
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where that shows up because that isn't SRL 55 underscore a so let's see if
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there's any easy places to measure the side not much in terms of easy places to
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murder is just downright awful alright so we're gonna measure for BB 5 vs oh
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and here's a good space to measure for it
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here so now the board is plugged in it's not on could see its dead
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you have a life but it's not actually powering so I'm gonna do is get a
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measure the voltage on PPV 50
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I was there are 500 this means of the machine is here's the good thing it's
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really hard to get some things like let's say p.m. sleep best for L which is
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what gets the machine you know into an s4 s3 state it's really hard to get
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stuff like that going when it's not there that can be a real pain in the ass
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that can be a lot of different things and it's very often at be quite honest a
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total nightmare but this it's ninety-nine percent of its already there
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you have a green light the SMC is going to do what it's supposed to you have
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your steady esta 5 rails as three rails and that's out so again that the
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machines gonna be a next five state then when you gonna try to answer industries
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they were to sleep and that is going to try to answer an SOS state which is on
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and I'm working you don't know what that is Google up our state of a computer as
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five other offer hibernate a story is to spend sleeping like a little white light
7:06
blinking on the frontier MacBook after you close the lid it's it's not off but
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it's not on either and you have always wanted to actually on the 99% the hard
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stuff here again it's done I got a light I have my main power rails and they're
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all I'm missing is I'm gonna take a wild guess the CPU is missing in the end I'm
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not going to do a lot of research to figure it out I'm not even gonna bother
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measuring the rail gonna do it I'm going to do the things that I can do my brain
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off now one of the things I talked about is knowing when to have your brain
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turned off so you can kind of save it for the other stuff so you can use your
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brain a kind of try to figure out what's wrong with this and go through every
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single round the sequence or you could just go there is a big blocks of green
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stuff over here use your brain just enough to try to figure out that where
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that is on this board look and see that there's nothing on the store that's
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burned that lets that's just go over what parent and also what that tells me
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since that P five years over pin is burned that means that anything else
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that's going to be on the PPF IV underscore soo bus may be burnt so let's
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say our place then they get their real but something else is wrong I'm gonna
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look for things that are powered off the people five years of us but i can assume
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here that the pee pee five-year so when high for a second so maybe instead of
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being 503 679 for a split second and that's what caused it to blow up as a
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result of the liquid so let's start with this and if this doesn't work we're
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going to look at the other things in the P five years so busted could be wrong so
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I go into the microscope turn on the soldering station
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reworked machine and let's get started so this is my chip
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get that thing heated up it takes second for the hilarity it up you know they are
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far at all I want is a new anymore and I'm gonna get myself you don't her
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boards one or two distinct is the one that I think out of the business missing
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anything that I need moseley's donor boards are missing everything that I
9:06
need they've even thoroughly thoroughly sodomized
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actually almost every single one of them is missing the things that only stations
9:26
which means I could turn on the film extractor I think tonight if you're
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doing any other type of work I know it's annoying have this thing on it is very
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loud you can hear it in these videos because they use as a tow bar X for the
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removal of the noise you can hear a little bit of it but you can hear all of
9:43
it and i also microphone really close to my mouth so the reason I have this Mike
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really close to my mouth said you can hear just how loud a lot of the stuff is
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so I can actually provide instruction during the video but this thing is
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annoying as hell but as annoying as it is the alternative which is inhaling
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fumes all day is really a really really bad alternatives
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standardized and also going to try to scratch away a lot of that corrosion
10:48
try to do both at the same time they got some quality and text box to stem check
10:53
and see the 559 v2 TAF and let's see what we can do here so I'm gonna try to
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remove the halls of the old livery saw your ad leaded solder and also kind of
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scrape away at the corrosion all at the same time we have a little bit of an
11:13
ambitious task in the other end of the eye on the kind of this little gentle
11:23
scraping it seems like the bottom of that is too far burnt renny general
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scraping to do anything as you can see I have scraped away at the entire trace
11:33
and I haven't made any progress at all and they're now I'm gonna try scraping
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away with the micro pencil
12:13
the other year there was like forbes in Iraq the whole idea behind the forbes in
12:23
a row is that it's pissed off that I didn't buy the FM 2003 and I understand
12:28
it pissed off that I didn't buy the FM 2003 I get that but I also don't give a
12:32
shit fuck you I'm not giving more money when I can literally hang the stuff I
12:37
gotta get right now I have a little screw it in my wall and now screw it
12:42
ever and I coil up my old on the other iron may put a right behind it was time
12:47
to use this plugin right I'm gonna sound really dumb while it was a practical
12:54
board repair school just has the FM 2003 and these other irons are you switch one
12:59
on and which one off and he doesn't really have a regular set up for it it
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says yes and deep so one of the things I was talking about my reviews of the
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other half year was how annoying a lot of the interface is on a lot of these
13:10
products and again like on this alarm clock in nineteen eighties alarm clock
13:14
interface that's really really really just not user intuitive at all and she
13:20
has once again it says snd and like sometimes you just want to hold down the
13:25
button to switch between them I don't know if you're supposed to if you hold
13:30
down the button you press it twice you present ones I can tell when the ship on
13:34
or off because again there's one number on the screen is off to the left and the
13:37
right eye on who the fuck knows the JBC station is very very simple it shows you
13:41
which iron what temperature which I is at you know it makes sense to hack 01
13:46
does not make sense so what I do is think as I could spend more money on the
13:53
head coach station has dual port for its not make sense or I could use my
13:58
existing station and do what works for me which is the plug that shit you know
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just plug the INM and then I'm done with it I unplug that I and i plug my other
14:09
island which is hanging right behind it on the wall the other benefit of this is
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that it takes up a lot less space and where I work so if I want to show you
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know the microscope out of the way the microscope this turns out the table so
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this is my hot air station this is my soldering iron this is my best and I
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don't have space for two stands if I put a stand here and I'm of the microscope
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the bars gonna hit if I try to put another stand here it's going to fall
14:38
off because hacker doesn't make your flat anymore why they don't make your
14:42
flat anymore is beyond me this thing being flat is if I had the new fr 810
14:46
the station would not work if they understand it this being flat may be
14:50
able to put this on top of this is the only reason that this works when you
14:53
look at the heck ofr attend the new one which I will never ever recommend you
14:56
buy just just based on the fact that they've made it not slack really thats
15:00
that it's that important I can you can't stack I need my workspace I have a 20
15:05
square foot office when I do over here as you can see is Ivan little now I'm
15:08
also gonna move back so you can see it and my iron is right behind me so you
15:13
know what I want to switch now that paying an extra one or two or three
15:16
hundred bucks tradition station bullshit I literally just unplug and plug it back
15:20
in and I know when it's on
15:22
I know what temperature is that when it's on I don't have to deal with the
15:25
alarm clock bullshit tell you it's small detail from the actual video back to our
15:33
regularly scheduled programming before I decided to bitch about a co and their
15:36
interfaces at a hair so I saw what I did there is a jumper wire because as you
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can see the pad was there in the past was simple but the problem that the
15:48
problem with that pat is that it wasn't actually connected to the trace so if I
15:51
were decided that I would have never gotten people five-year so so what i did
15:55
i did leave a little bit of the pad there was leaving a little bit of the
15:58
pad their means when I hit the send to the wire to get rid of that little
16:00
excess water that I C after the flux
16:09
Spencer what's going to happen is not get a jump away from them so does the
16:15
day if that was inside over there that just came right off with it so now I'm
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ready to put another chip on so I mean
16:21
go to my daughter board that actually still has that ship
16:32
and adorable that I took the job offer there actually is a chip that is more
16:38
burns in the one that I'm currently working with are you kidding me let's
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see what does it look like
16:46
missing her bad fact that there is this bush yeah yeah and I do next
16:56
the sport as a whole and then obviously the reason it has a hole in it is
16:59
because I didn't know that they could fix the SOL for the CPU the Americas
17:04
boards that I look at where like it has a hole in it but I know the original
17:09
problem was fixable is getting higher and higher I mean if this had been given
17:19
to me I would have fixed
17:27
these may be serious all the homeboys have a destroyed CTV car circuit I gotta
17:34
find people and offer them like a group rate or something on the on the training
17:41
class yes you do these people would be rich if they weren't throwing the strap
17:45
in the garbage I don't understand why you throwing us away after 1530 box you
17:53
selling it for 169 a 250 or so what's really still has put in a hole through
18:08
as if you didn't put the whole through though this would be a problem to begin
18:10
with when you alright so let's remove that chip from the donor board fume
18:23
extractor over some blocks down there is going to be over here on the desk so I
18:32
moved the fume extractor over and fucks on it
18:58
director of activity here
19:03
traded this chip doesn't run away while I changed open broadcaster back to the
19:07
microscope better not flying mayor filter
19:34
doing theirs we push down on the board that's important if it's natural and the
19:39
Board may contact and this one won't work then I'm gonna go around it with my
19:47
grandparents were going to make sure that they actually started on their
19:58
individual join as I go
21:30
you know become clear to see once a used their wanna make sure my jumper is in
21:36
place so I'm gonna do as I'm gonna hold the jumper properly so that it doesn't
21:42
move away or stick to my on Saturday directly to the chipping and I really
21:46
want to make sure that that jumper is straight to my chip
21:57
that ship is going be be five years
22:25
ok now first thing I want to do as I want to see if there's any change so
22:30
that issue and let's see if I have any any any positive results so plugin
22:48
as you can see which resists tion for time on mister is looking good so I'm
23:04
pretty sure that means all of the car and the air so let's go over this again
23:09
the whole idea here is that when you look at the axis is why having the whole
23:12
computer is really ask for from people saying stuff we're seeing the entire
23:16
computer allows me to do this diagnosis have a commentary while half asleep and
23:22
instill fix the board inside of 20 something minutes whereas without that
23:27
it would take a lot longer if it took a lot longer would mean lower priority
23:30
lower priority means lower turnaround insist you know this makes everything
23:35
that much easier it's that much simpler so a lot of people think is a genius is
23:40
really does mean having some common sense and following along and looking
23:43
through to see what it is that was wrong and just based on where the damage was
23:48
and then again I can come up with a serious what happen based on that so
23:52
something like this is kinda what tells me that in soo rail being not present
23:58
will keep it from turning on but it can still enter it as a state so like a few
24:01
years ago at the center the knowledge base I know that this board is internet
24:05
it can be an SL stadium or the rail missing it's not going to just jump back
24:08
to a nest restate its everything's gonna turn on except for that one well it is
24:12
kinda learn this stuff just from just poking around looking at stuff that
24:15
otherwise would have looked at but yeah okay so what I said about how the fans
24:20
been so I should be good to go right I completely missed the entire backlight
24:27
section of the motherboard none of which was actually working so let's just take
24:32
a look here and so yeah so we have this which trace we have this line that comes
24:42
here for backlight enable this is what we actually worked on
24:47
that was for the CPU power we have gets it gets better so the LCD connector was
24:56
missing tends to reinforce they usually burned here they were actually
24:59
completely hundred-percent missing so that was that was some fun right there
25:05
right over here so that's where it's going to the backlight enable resistors
25:16
that is that new backlash use that back light fuse is going to this resistor
25:21
which is responsible for the voltage dividers gonna send power to dissolve
25:24
machine this this was this was fucked and now it is slightly less fucked which
25:32
which is a good thing actually be good to go because I know one thing's for
25:42
certain I am NOT spending another second on this