iPad pro A1673 No power repair using a Thermal Camera – Tiny Component causing a big short.
It came in for no power and customer needs. His data customer is only concerned about his data and not the actual tablet and i’ll. Let you know what i did so far, but let’s read what the customer wrote before we proceed with the repair issue. Is we have some very important pictures on the ipad? Our family members that passed ipad was never backed up. Screen is broken, but not looking to fix the ipad data recovery, so customer is only interested in data recovery and not fixing the tablet. His screen is broken. Watch a video of you, repairing the tri star chip, but not sure if that’s what’s bad on the logic board. The tristar chip was actually bad on the board and i replaced the chip. I did not make a video on it because we have a lot of videos on replacing the tri star chip, but let me show you what i did. I replaced the tristar chip, which is right here. The tablet failed for tristar we tested using a tristar tester. It failed, we replaced the chip, and now the charging circuit is working properly. We get a pass when we test using the tristar tester, but the tablet is currently charging at 0.48 amps and not 0.96 amps, like it should so there’s something going on with the board. Based on my experience, a 0.5 amp draw is likely an indication of a short on the tablet that’s. Based on my experience.
The tablet should be charging at 0.96 0.98 anytime. We see 0.48 0.47 0.50 amp draw it’s likely a short on the board, so the tristar chip partially fixed the issue of the charging circuit, but the tablet is still not powering on right now. What i want to do is plug power onto the tablet and we’re going to monitor the tablet under thermal cam to see if we can figure out where that short is coming from. I have a lot of videos where we work on tablets that charge at 0.47. Amps 0.48 amps and every single one of them is a shorted capacitor on the board. We do not know if the same holds for this tablet, but we’re going to find out what we’re going to do now is we’re going to plug the charging cable, and i already have the power supply set at 5 volts. We can monitor msb and run by looking at the power supply screen here or we can look at our amp meter today, i’m using a power supply and not the power bank, because i place the power supply here, it’s an easy access, so let’s plug. Let me turn the power supply off: first plug the charging cable thermal camera on and we’re, going to monitor the board under the thermal cam to see what gets hot now. Like, i said, i already changed. The tri star chip and tristar is passing now the charging ic is passing and we do not have any issues with the charging circuit, but the tablet is drawing 0.
5 amps or 0.49 amps that’s, an indication that we have a short and how do i know that 0.49, amps being run or 0.50 is an indication of a short. I know from experience because every time i work on an ipad where it’s charging at 0.47, 0.48, 0.49, 0.50 it’s almost always almost always a short, not almost always it’s, always a short, and you can check previous videos that i’ve done working on ipads with a short. So right now, i’m, almost positive that we have a short on the board, but we’re gon na have to check it to confirm. I have my thermal camera here, pointing at the board and let’s go ahead and turn the power supply on and look at that we see two big heat spots and we see one tiny heat spot right there from my experience, it’s that tiny heat spot that causes The heat on those two ics, a short here is what causes a big short here and that’s. Based on my experience, i mean, if we use logic, we go and check on those ics. Why are those heating up, but because i’ve done so many ipads with a short issue? I know it’s the small guy that causes the problem on the big guys. So we want to point the tweezers just over those components and we’re going to go under the microscope and see what those components are right there. So it’s either this or this my tweezer was pointing on those components.
It was pointing right there. We do not know if it’s this one or this one. Let me take a look at the thermal camera again to see if we can pinpoint where the heat is coming from. Let’S try one more time. Maybe i can zoom in with my thermal camera, there’s a zoom in option that we can use, and maybe we can go to manual mode increase the temperature boundaries i’m, holding the thermal camera with my hand. So, with the zoomed in option, it seems a bit shaky right there. Okay, so let’s see. Where is my tweezer, pointing it’s pointing right there? So since twice the tweezer pointed at this component, let’s start by removing this component, this disconnect power, the cable i already have the battery disconnected so let’s start with this component. Those are bypass capacitors. They do not affect the functionality of the tablet and all of those capacitors most of them are connected in parallel, so it doesn’t matter. If we remove one two, three, four or even ten capacitors, the tablet will still function and right now the customer is interested in data recovery. So we broke this one off fly away to the ninth dimension. We do not care and let’s see. Do we still have a short i mean honestly, i forgot to test for a short on those two caps, but heat in this area is an indication of a short and right. Now i want to test for a short after removing that cap and the short is gone.
We do not have a short anymore let’s go under the thermal camera again and check zoom one x. Now we can see the whole board and now, if we turn the power supply on, will we see those two big spots heat spots and the tiny one pointing to the capacitors let’s see one two three and now we see nothing. Look at this now. The cpu is turning on. You see the two big spots that were initially heating up. They were right there and the capacitor that we removed was on top here. Look at this that’s one beautiful scene, one beautiful healthy scene, that’s a healthy motherboard. So right now i’m going to use the power bank, so i can show you the meter up close and look at this 0.95 amps being drawn by the tablet. That’S a healthy charge, 0.95 amps or 0.96 amps tablets fixed the problem is fixed. So now all we have to do is try the customer screen and the customer did mention that his screen is broken and he does not want to fix it, but he’s interested in his data recovery. Only let me connect the screen quick, so we can test and make sure the tablet is working and we’re gon na proceed with data recovery screen is connected and right there right there fixed, awesome, that’s gon na be awesome news to the customer and he’s not gon Na lose his family pictures, let’s wait, make sure it boots up and right there right there is touch.
Working touch is working great great, so that’s it. I hope you enjoyed the video don’t forget to like and subscribe leave a comment.