Urgent iPhone 7 Repair - Dead No power.

here we have an iPhone 7 that came in for data recovery customer wrote in the title of the ticket iPhone 7 data recovery nobody mails over an iPhone 7 or an older phone for the sake of fixing that phone how much is an iPhone 7 right now you can go to eBay and buy one for $70 $80 maybe or even less I don't know how much they are going for so anytime we get an older phone whether it's an iphone 5 iphone 6 iPhone 7 iPhone 8 even iPhone x it means it came in for data recovery we got a flip phone about a week ago and that flip phone if you go to eBay to buy one it's about $20 if somebody wants to buy it it's an ancient vintage phone it came in because that customer had information we did fix the motherboard for the customer and then it turned out that that phone had two pictures only and the customer said that phone had two pictures if that phone had two pictures or 1,000 pictures the job is done it's not my problem we do not charge you for how many photos are on that phone we fixed the motherboard we were able to turn the phone on if you had two photos or 6 million photos it's going to be the same price it data recovery price so right now we already have the motherboard out and big boss as an initial inspection he removed the shield the black shield from here and the black shield from here and of course he marked the ticket number on that motherboard in case we do not want to mix motherboards for customers so we always have the ticket number on the phone itself like this and we have the ticket number on the motherboard or on the charger or on the case or on the bag whatever the case may be customers they like to send everything over so we always have labels for every little thing that customers mail over let's take a look at the board and see what's going on just a quick visual inspection I have not worked on this phone before recording the video anytime I work on any device everything is done in real time I do not previously know what's wrong with that device if I do I mention it whether I worked on it before or did not work on it before it's an educational video you're going to learn something by watching the video even if I do not fix any devices when making a video there's something to learn from every video whether it's life lessons or philosophy or repairs or whatever the case may be there's always something to learn from every video I do not post useless videos so the board overall looks very clean no signs of corrosion no signs of liquid damage and what is that scratch doing here right what is it doing here did you previously work on this phone let me just do quick measurements while we are visually inspecting the board that way we can hit two birds with one stone so if we go to diet mode and do we have a short circuit on VCC main that's VCC main right here and we do not have a short on VCC Main and just randomly measure some capacitors we do not have a short just random measurements for now we do not have a short anywhere and just based on visual inspection this guy is a bit discolored a discolored component does not mean the component is bad I mean look at this component it looks a bit yellowish this one looks white it does not mean that this component is bad or both components are bad but this one here looks kind of corroded that may be nothing if we measure here and look at this at that short so we're going to have a that short everywhere because all those caps are connecting in parallel I mean every cap has a that short every single cap few minutes in and we already got it wow I do not want to get too excited but if it quacks like a duck it walks like a duck it's probably a duck that's the way I think of it it's not going to rain if it's not cloudy right you do not see rain with blue skies so I'm done with this side of the board and we're done with the front side of the board right now we're going to be using an iPhone power supply and it looks something like this I mentioned this tool in previous videos it's an iPhone power tool we can supply battery power and charging cable power via this tool I'll show you how it works this tool is sold on our site you can log in to northish fix.com at to cart along with all the other tools that you need everything from soldering stations hot a stations this amazing microscope and now we have the new version the red color articulating arm the ring light antiglare light which we currently have out of stock the awesome braid Wick that we sell solder sucker um the short NF that short charging stations tweezers original mte flux everything is sold on our site and all items are in stock just add to cart check out pay and we almost always ship out same day let me show you how this tool works we need to supply power to this tool in order to use it we can supply power in multiple ways we can plug in a power adapter ranging from 3 volts to 28 volts any power adapter that you have whether it's a 5 volts 12 volts 23 volts whatever the case may be you can plug it here even a laptop adapter 19 volts you can plug it here or you can power this device using a micro USB cable or you can plug those banana plugs onto your power supply and set voltage to 5 volts and this device will work so you have multiple options for power let's say your micro USB connector went bad we can still power this device on using the banana plugs plugged into your power supply or we can use a power adapter right here multiple ways to power this device in my case I'm going to use a micro USB cable right here and I'm going to plug it right there so now this device is on then what we have to do is we have to look at the cables which one is iPhone 7 this one is 7 4.7 yes so this one is s and this one is 7 plus and inside the Box you have cables for every iPhone from version six all the way up to I believe 13 Pro Max we have the details on our site but for now we're going to plug that cable onto the motherboard so this cable connects your battery we're going to supply battery power and a charging cable power okay two in one let me show to you under the microscope if you have not used that tool before or similar tools let me show you how it works you see we have the battery connector right here and we have the charging connector right here so we connected both as one piece battery connector and the charging connector let me unplug you see if we flip the cable right there so that's for iPhone 7 iPhone 7 plus has a different cable for example this one here that's 7 plus 5.5 in is 7 plus the connector is a bit different you see anyway now a healthy working board when we press on the power button on this device we should see amp draw starting at 0.3 amp 0.4 amp 0.6 amp it goes above 1 amp and then it settles down to about 0.3 0.4 amps that's a healthy motherboard right now if I press on the power button it tries to start and then it goes back to zero I press it picks up just for a split second and then it goes off you see let me take you under the microscope maybe you can see that better look if I press on the power button the camera is not in Focus but it doesn't matter you see it tries to start and then it goes back to zero so we have an issue we have an issue with the motherboard and that's why the customer mailed this board over or the phone over because the motherboard has an issue so where should we look what I want to do is grab my thermal camera and I want to monitor the board under a thermal camera while we press on that button and see what happens now I did not apply any power yet you do see some yellow spots here and here and there and that's reflection that's nothing to do with heat you have to be able to differentiate between the Heat spot and Reflections if I tilt my camera we get rid of the reflections you see all right so let's try to press on that button and see what happens in that Split Second look at this look at this WOW clear as daylight look at this and where is he coming from I need to be able to pinpoint where he is coming from right there right there let me go under the microscope and I believe that's right next to the component I told you does not look good I have my tweezer pointed here of course I cannot be 100% accurate when I point my tweezer but if I pointed my tweezer here it's very likely that this component is bad because that's the only one that looks really bad and I believe I mean even without a thermal camera or anything I would have started with this component since we have a short circuit at that short in this area now one problem with this area is components are very tight if we apply hot air and solder liquifies all across this area and we try to remove this component we may end up shifting by mistake shifting all those components in this area maybe I try to remove this component while solder is liquefied and my hand shakes a bit and I'm going to end up knocking a lot of components of their position so what is the best way to deal with this scenario we're going to rip this component out we're not going to apply hot air we're just going to aggressively rip that component off the board right aggressively because we're trying to recover data from this phone so we have to be aggressive just like that just rip the guts out right done am I recording yes the question is will that solve the problem I do not know we're going to have to check I could have used an atomizer applied some flux powder and hit that button but heat is being generated fraction of a second so I do not know if that will work if flux powder will work alcohol will most definitely not work we were able to see heat using a thermal camera but I do not think there's any other way to know which component is bad other than the thermal camera for this scenario because heat is being generated for a Split Second what do you think I'm afraid to try it that's too exciting too exciting do we still have a short circuit we can measure one thing we can do is measure and the other thing we can do is push that power button and see if it's going to go to zero again in a split second that's what we can do should we try it one two and yes done wow you see it's not going off and I have it backwards it should be like this right now we are at 0.1 amps all right we're done what about replacing that cap we're not going to replace that cap that's for sure I do not want to disturb other caps in the area and that cap is not needed I talked about this in countless number of videos on YouTube YouTube If you have 100 security guards guarding a building and one of them cold and sick I cannot make it today we still have 99 security guards guard in that building nothing is going to change everything is going to work perfect so one guy out we still have a lot more guarding that building we have this guy this guy this guy this guy how many we have a lot and the reason they put in a lot of caps is because if they wanted to combine the value with one cap that cap will be super big so in order to spread the value on that board they divide that value into too many smaller caps to make up that one big value all of them are connected in parallel now you know why a motherboard contains a lot of capacitors if we measure here I'm guing a short because that's ground and if we measure on the other side we probably have low resistance look at this 0.02 voltage drop it's no longer zero if we go to resist resistance mode a beep and diet mode does not always mean it's a short you have to know if it's a that short or if there's any value to that capacitor in this case we are now reading 0.02 if we go to resistance mode and we measure here we are measuring 19 ohms perfect so we do not have it that short anymore so what does that all mean it means we're going to have to plug the phone inside the housing and try it if we talk the talk we have to walk the walk right right now I'm doing big boss's job because he already left home he called it off for the day we got a lot of packing supplies today I mean a lot and big boss and my dad worked all day to organize the boxes shipping supplies and all that stuff stuff screen goes first and battery goes last okay screen is connected the charging connector is connected and now we're going to connect the battery and we're going to attempt to power that phone on assuming the battery is charged and I got nothing on the screen nothing at all what does that mean it means we either have a that battery or the battery is not plugged in properly or the screen is not plugged in properly one of the three or the screen is faulty one one of the four I do have a charging cable right here so let's try it that way and I think it's me oh oh right there I do see the battery logo right here and the phone is charging at 5.2 volt at 1.7 amps awesome see look the camera will probably not focus here unless I put my face here and I'm not going to put my face here or maybe I should like this okay 5 volts at 1.7 amps perfect we fixed that phone and we located the bad guy so say hello to the bad guy he's already gone threw him in the trash I'll pause the video for five minutes and I'll be back all right good news few minutes later the phone is on Wow we did it we did it that's it last repair for the day I hope you enjoyed this video let me know what you think leave it down in the comments don't forget to like And subscribe and we'll do something else in the next video and right now it's 5:30 I'm done I fix a lot of devices today and I'm [Music] done better than [Music] Factory

Channel: NorthridgeFix

Views: 74,459

Keywords: iphone 7 repair, iphone 7 data recovery, iphone 7 motherboard repair, iphone repair, iphone data recovery, iphone no power

Id: _QXiN7b6z2s

Length: 18min 55sec (1135 seconds)

Published: Fri Dec 01 2023