[WINNING] Cleaning up another store's mess :(

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 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

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Views: 519,635

Rating: 4.9150829 out of 5

Keywords: macbook logic board repair, outsource, business to business, business rates, macbook, logic board repair, component level repair

Id: 1UKywVwN1is

Length: 41min 1sec (2461 seconds)

Published: Wed Feb 07 2018