Macbook Air No Power Repair using Flir Thermal Cam. Short on PPBUS_S5_HS_COMPUTING_ISNS - 820-00165

our video we're gonna be working on a MacBook Air 2015 this is the a 2000 won 6-5 board I already removed the board after MacBook here customer brought this in because it doesn't power on there's no liquid spill and the customer does not know why the laptop stopped working he was working on it two days ago and today the laptop is not turning on so I already removed the board and I attached the power board on here so we can plug a charger in and test it the first thing I want to do is touch the board under a thermal cam I want to see if there is a short of any toy before I start to work on the board I want to try to get the board fixed as soon as possible so I always take the fastest route and fastest route is to check the board under a thermal cam now if I do not see any short under the thermal cam then we have to start testing voltage rails to see which one is missing or what the problem is I by just looking at the board I do not see any signs of liquid damage so that's a good thing okay let's see so what I'm going to do is plug a cable and we do see a green light a green and then orange light which is good feeling the board by hand CPU is not turning on there's no heat on the CPU at all so we could have a problem with CPU vcore absolutely no heat on the CPU I do not feel heat by putting my hand on the board but checking by hand is not enough let's take a look under the thermal cam to see if there's anything obvious okay so we have a heat spot right over here which could indicate a short and we have a hit spot right over here now where is this heat spot coming from there's over 10 components here let me go into manual mode and I'm gonna raise the temperature so we can pinpoint where the short or where the heat is coming from and look at that we are at 375 degrees now that's super hot it's definitely a short so I'm gonna put the tweezers over the hottest component on the board right over here right over here this is the component that is generating the most heat and this capacitor is probably and most likely the capacitor that is causing the short let's take a look under the thermal cam again just to make sure that this is the capacitor that we're looking at right there and yes this is the component that is heating up the most let's see what that capacitor is for so the capacitor that is heating up the most is this one here and what's this look at that this is the pp bus as 5hs computing is and as this is a very important voltage rail and if there's a short on this rail then of course the board is gonna power up let's go ahead and remove this capacitor and see if there will release our short so we're gonna use our hot Weezer's let's see if we can remove it with just the hot Weezer's it's a big capacitor so it's gonna take a lot of heat to take it off the board how teasers on and the machine goes immediately from zero it's at 300 degrees 330 350 400 it's amazingly fast 430 degrees let's try to remove this but let me turn the fume extractor on and let's go ahead and do it okay so let's check and see if I were short is gone we're gonna put the meter in diode mode read probe on ground and black probe and our short is gone this is ground and we do not have a short anymore so we pinpointed where that short is coming from we remove the capacitor and we do not have a short anymore we can check the board under the thermal cam again to see if we still got a heat spot the board is still probably hot from the hot Weezer's so let me put some alcohol so we can call it down a bit I want to be able to see under the thermo cam if we still have heat in this area all right so go under the thermal cam we're gonna go into automatic mode the capacitor was right over here right over here so let's plug power onto the board we have a green light now look at that we do not have any hot spots anymore the short is gone and the CPU is hot yep the CPU is odd 112 degrees it's gonna probably go up 1:13 114 115 we should have a working board I'm gonna go ahead and replace this capacitor since we have a lot of donor boards for the a 2000 165 this is a donor board right here so before we put the capacitor back let's prep the pads turn the soldering iron on and right now it's at 390 degrees let's wrap that component from from this donor board here and we can use the help of the hot air so we can get the job done faster all right on the jobs done if we want to make it look pretty we can apply some folks just give it a little bit of heat we do not have to do this but if we can make it look pretty why not and that's it let's wait until it cools down a bit hopefully the board is working so the key to this whole repair is the thermal cam the thermal cam is what actually detected and pinpointed the shorted component a lot of people used to tell me why did you spend so much money on such a thermal cam this is very expensive camera because you get what you pay for this is a 60fps thermal cam so you see heat in real time it doesn't take few seconds for you to suddenly see heat you can see heat as heat is being generated on the board I mean when there is 60 frames per second the processor is doing a lot of work to show you 60 frames per second and that's why it's expensive this is the flurry 60 I've had it since 2014 I did not buy the brand new but I bought it used from a local person that I found on Craigslist I paid the guy about maybe $2,400 at that time but the camera was seven thousand dollars now the e60 has been discontinued and the prices went down I do not know what the price is for the e60 now you can get one brand new now for $32.99 $3,300 so I still got an excellent deal this is a 320 by 240 IR resolution and it's 60 frames per second the camera is absolutely one of the best tools we have in the shop here and it paid for itself throughout the years the board should be cool now let's go ahead and do a quick cleanup and all that explaining about the thermal cam I hope this board works otherwise whatever I said about the thermal cam is not gonna make sense it's the end result that matters turn off the fume extractor we do not need anymore hey so let's see if we gonna get anything on the screen it was not turning on before we did have a green light but no power so I do not have the fan either what are we missing off this cable oh look at that it's it's on it's on the laptop is on because we do see the backlight here right there but we do not have a harddrive so it made this oh right there the laptop is working let's grab the hard drive just to make sure everything is good remove the battery I do hear the chime right there awesome awesome laptop is working and everything is good now I have another laptop we are working on at the mid 2012 MacBook Pro it came in for no power as well green light orange light but no power so we're gonna go through the same process and see what is causing the computer not the power on the fan spins on that one when you plug the cable in but nothing comes on the screen and no chime so no chime it could mean that there is something wrong with the vcore circuit with the CPU he core will see I'm not gonna do it in the same video we'll do a separate video for that one that's it I hope you enjoyed the video don't forget to Like and subscribe and we'll do something else in the next video

Channel: NorthridgeFix

Views: 8,252

Keywords: macbook air repair, macbook no power repair, 820-00165, flir thermal cam, short, PPBUS S5 HS COMPUTING ISNS, macbook air, capacitor short, northridgefix

Id: kvvkRdV83X8

Length: 14min 26sec (866 seconds)

Published: Fri Jul 19 2019