iPhone XsMax No Display--Multimeter Troubleshooting for the Win!

This XsMax repair is a lesson that "see broken, fix broken" isn't always the best strategy for troubleshooting iPhone logic board problems.
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Jessa’s Equipment Links:
Our thermal camera recommendation:
Seek Compact Pro for Android amzn.to/2J5kkfA
Seek Compact Pro for iOS amzn.to/2RXrF4H
Macro Close Up Lens for SEEK COMPACT PRO THERMAL CAMERA tinyurl.com/5d5mbdmz
›Charging:
USB ammeter: amzn.to/2k2suZN
Bona fide MFI charging cables
Anker: amzn.to/3u3GqIG
Anker USB-C: amzn.to/3KIMbSm
›Microscopy:
Recommended microscope: amzn.to/3IyoBFT
Light ring for microscope: amzn.to/2iRRdOt
Barlow lens: tinyurl.com/4nz4j8x6
›Soldering:
My soldering station with standard iron: amzn.to/2hG656k
Primary soldering tool--mini hot tweezers amzn.to/2hY5DN5
Favorite tips for mini hot tweezer: amzn.to/2iSKF67
Favorite tip for standard iron: BC2 amzn.to/344iWZ2
›Ultrasonic cleaning:
Crest iphone sized cleaner: amzn.to/3qVxO52
Branson EC cleaning fluid: amzn.to/2iSVuFq
›Hot Air:
My hot air station: JBC TE-1QD not available on Amazon, $1500
Recommended station Quick :tinyurl.com/2p8b6487
›Small supplies:
My favorite tweezers--store.ipadrehab.com/Our-favor...
My favorite flux:amzn.to/2iCy5Vm
My favorite solder:amzn.to/2hY1gBA
Kapton tape: amzn.to/2iqxVAY
My blue mat: amzn.to/2jfAiKp
Cutting board I solder on: amzn.to/2kDO0XJ
Low melt alloy:amzn.to/2iqITGB
UV light: tinyurl.com/39kc3he7
›Diagnostic tools:
Tristar tester: tinyurl.com/3573s3yv
DC Power supply: amzn.to/2iRN9hj
Multimeter: Fluke 115 amzn.to/2iqMmou
Fine point tips for multimeter: amzn.to/2iRPjgP
Freeze spray:amzn.to/2iuNZnE
Zxwtool: tinyurl.com/2p86e33y
Storage Repair Case:
Christy’s Favorite for iPad Repair: amzn.to/3KIhQD6
Jessa’s Favorite for iPhone Repair: amzn.to/3qYTgGc
Large Size for iPhone Repair: amzn.to/35m1Gzh
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[@hungryhungryhummer]

I love Jessa. She has the greatest attitude.

[@djkevlarr]

Thanks for this service to the community!!

[@joerogers4227]

Great job using human logic, schematic, and multi-meter. Great to see this done on modern hi-density circuit boards. I used to do this on old tube equipment when you could get schematics from SAMS. All functional logic knowing what is supposed to happen in different parts to the electronics.

[@MarioCRO]

Great commentary while repairing, trully helpfull information from start to finish of the video, thank you!

[@fd1150]

Excellent skills and very well explained. Thank you for your videos.

[@trich301]

Magnificent!!!!!! Love what your doing. I'm coming for training.

[@moc9579]

LUV your vids...finally a passionate person that knows their shiot! Way beyond my tinkering aspects, great to have a ninja in our corner, that documents the battle.

[@jlucasound]

Well Said, Michael!!

[@tactileslut]

"See broke fix broke" still works for me but I love your work, Jessa.

[@paulsullivan6392]

Very nicely done young lady. I love your description of filters vs. inductors. Great way to explain basic old school trouble shooting on the video circuit. Too old with shakey hands to do any surface mount work here so that brings a great appreciation for you skills. Thanks for sharing.

[@elijahchigwada7093]

Awesome video. Just wanted to point out that those small capacitors (220 pF) play an important role as they are decoupling capacitors that short high frequency noise to GND. Yes everything will work fine without them but if you ever get noise in that line you are going to fry whatever is connected on that line. I would place those caps back just to be cautious.

[@markpotter6186]

You are a brilliant instructor very enjoyable to watch - and of course, learn.

[@robertcalkjr.8325]

Thanks Jessa! Yep, a DMM is #1 on the need list for electronics!

[@blakenassar9251]

I love your videos Jessa! I appreciate the explanations on how to read the schematics as well. One day when I head to New York, I've got to come and meet you.

[@2169scs]

Excellent job, thanks for the education

[@mufaddaldiwan1278]

Thanks a lot. Keep it up. Very dedicated work

[@sharfazhameed6382]

Can never get tired or fast Farzard Jessa’s vids every single details are million dollar worth cos not only we can use this on iPhones but on any electronic repair

[@apsully22]

I just found your channel because I was searching how to recover data from an iPhone. I watched three of your videos all the way through and felt so satisfied watching you problem shoot and fix the issue.

[@Muttonbird]

wow! Brilliant video. Absolute pleasure to watch.

[@MJandroidhawaii]

Fabulous instruction hands down one of the best instructors I've ever watched. Great work!

[@odomeroamugini9235]

You are doing Great i always admire your technical analogy and troubleshooting.

[@Racerman27410]

MULTIMETER!!!! Winner winner chicken dinner! I would be lost without mine. I troubleshoot HVAC boards and associated components in my business but am fascinated by your work with phones and really enjoy learning about what makes them tick... I consider sucessfull troubleshooting to be a fine art requiring imagination (where is the schematic?) and experience in knowing the path and walking the path..... great video! :-)

[@ejeckk]

I adore the problem solving.

[@elenamarinca1184]

Hi At last found the logic denomination of what you are...I am Marcel, my hobby is electronics repairs, and You are for me , and you shoud be for a lot of us, the amateurs, THE QUEEN OF ELECTRONICS REPAIR. Thanck you for all this repair videos.

[@timweigel9310]

I am certainly glad to have a channel on KZbin like like yours.. I catch myself watching and watching. Instead of surfing now. Spent the last 35 yearsand in our county in state you have to be certified master technician for seven different things to be able to hold license here. Electronics is one of them.I'm just so staggered watching you fix something. That one got to me 😂.keep up the awesome work in I'll be watching you and throw in a comment every once in awhile if you don't know something.. 👍

[@harleysofttailtx]

GREAT video. Love the strategy and the thinking here.

[@j-man6001]

Thanks for this, just found your channel

[@YousefNofal]

I really respect you and the way you give a free service and knowledge to the people, goo ahead sister

[@jamiee172]

Pretty cool! Love this, you are an excellent teacher!!!

[@JaZoN_XD]

Absolutely awesome video!

[@davejacobsen3014]

I became a radio tech back in sixties with tubes and transistors. I moved into IC but what you can do with a microscope and flux puts me in awe of your skills. 73 and keep it up, KW7YZ.

[@____-gy5mq]

You sure you're still alive?

[@glitchd1_]

Bravo. Im not personally an "Iphone person" per say, but your videos are always so packed with info. Thank you for your insight.

[@ramyhassan7979]

Thank you very much for this effort

[@nickstaropoli628]

Thank you for teaching, your way it's very interesting Love the way you do it

[@danljohnston]

Amazing work!

[@mobiletechtorino3605]

Such a real honestly Excellent job i never ever miss your every video i learn many thing from this video LOVE YOU REHAB

[@alenapatterson1431]

Thank you for taking your time to explain. Kind regards

[@satellitekid7953]

very informative. crystal clear! thank you for sharing.

[@ianwindley70]

great video as always,keep it up

[@sharfazhameed6382]

You are the best n you are a moving technical college. Your instructions help us all viewers. You are just one in the world n anyone can understand wen you talk about a problem n how to diagnose n fix it

[@Joaquin77]

Wow awesome detective work!

[@donlivingston2339]

just love how you do this stuff :)

[@ahridabdelati4426]

So much love from morocco, thank you do much

[@nigusssemulat7356]

Excellent Jessa

[@PrincewillUzochukwu-xd3ys]

Jessa you are the best thank you

[@Mradam912]

Everytime i see your videos i learn somthing new thanks from morocco casablanca

[@Man15250771]

Muy bueno. Gracias!!! En realidad lo que aprecio de sus reparaciones. es el enfoque. el leer entre líneas que es lo que debe aprender a hacer un tecnico en reparaciones, además de contar con el equipamiento adecuado por supuesto. Me interesa mucho aprender su método de enfoque, allí yo creo está todo el secreto de reparar cosas.

[@gnm800]

Jesse, you are amazing!

[@davidguillory4311]

Thanks for the education of iPhone 👍

[@superflyyeddie940]

Wow Excellent video as Always ..

[@pr0xZen]

I love this stuff. The videos here kinda feel like the yin to Rossmann's yang. Not saying either is wrong or right, good or bad, but the approach to almost everything, is very different. I firmly believe, that with the repositories of both available, and the will to put in the work - _anyone_ with two reasonably stable hands and at least one eye (but preferably two) - can learn to do this.

[@mrgrumpy5116]

another great video thank you.

[@KelikakuCoutin]

Thanks and please keep up the good work. B'H.

[@HETRM]

thats amaaaaazing!!!!!!!!! brilliant reasoning!!!!

[@PhilipHousel]

Those filters "that don't act like coils" appear to form a common mode choke filter. That would make sense on a differential input like that video chip is using. Excellent video and teaching.

[@Mtr1997]

Great work

[@0o32]

Jessa you are Best thank you

[@geoffaries]

I'm not very techie and these repairs are certainly above my pay grade, but its a pleasure to see "Jessa"? at work

[@mrgrumpy5116]

really enjoy your videos, good diagnostics. 3500 miles is a long way to go to repair school

[@sharfazhameed6382]

You are the best n thanks for the video

[@jaimecosta2966]

Brilhante video... I loved electronics when I was young and lived in London... Saying that I don't use iPhone but I do have a 5se new that has bean given to me and I may try somo of your tips one day...

[@rosetta7862]

Nice to see XS Max

[@abdrahmanahmed7552]

great video, amazing !!!

[@jasonb4370]

Love this soooo much. We must fix our stuff! just like all the other countries do.

[@nasirrajput854]

You are the best thanks a lot

[@sjgoff]

You have 2 qualities that rarely go together. You are extremely intelligent and have this way of explaining things that average everyday Joes like me can understand. The other thing that I love is your process of diagnosing. Sometimes you have to use common sense and logic BEFORE pulling out the test equipment and schematics. Keep on keepin on.

[@JessaJones]

Thanks Steve!

[@jlucasound]

You are a Genius, Girl.

[@oblioi]

love all 7 of my multimeters too

[@user-gx7xf4im1s]

I LIKE YOUR JOB

[@royberger1558]

Great video.

[@niethanifixvlog]

thanks for this video it really helped me because i fixed the iphone xs max no image problem...

[@Grim-R34p3r]

This is soo educational..

[@artsandtechnology]

thank you teacher your great ❤️

[@Andrew-dp5kf]

The grape analogy was spot on

[@theultimatemyrmidon7459]

I have the same multimeter but not the same factory... I like it... so useful

[@trekvdm]

Why do I find this so entertaining?

[@rbnjr]

awesome , just awesome..

[@JoeCentralTech]

Nice Job!

[@kobarispacious9051]

Hello I'm Emerson, I'm a phone Repairer. I love Your video and hope to see more of it

[@technicalideasbangla7218]

Thanks

[@QsTechService1]

How cool 😎 working on iPhone X’s Max

[@CyberKaz]

We love you!

[@hesamshakouri8786]

hey jessa please stop being awesome

[@ChemistryInTelugu]

Great video.. And will you please help me to get back my iPhone 8 Plus which was damaged at NAND position while upgrading its memory to 256gb.. I lost few connections while removing 64gb Nand. Thanks in advance

[@yasaryasi1136]

Very nice class mam

[@kyawlintun8324]

I love it .

[@ArcAiN6]

@ time 11:24: More than likely. at one point in time, the development team were working off of spec, and not actual hardware. i.e. they were using a similar LCD panel for testing purposes, and not the final product panel, and using this small circuit as a sort of "disposable" adapter to test the board. Once they were able to test with the actual end-product panel, this circuit would have been removed from from the pick-n-place program. (less costly than rebatching all the boards, and less costly than having design engineers layout a new board design just to omit this development circuit) This sort of thing is common practice, if you've ever pulled a complex board from just about any device (phone, computer, that one unique gift idea from ebay.cn) You'll find quite a lot of non-populated areas, and even whole circuits. This is also used to differentiate "models" or teired of the same product. I.E. If one phone has 64gb of SDRAM, and the cheaper model only has 32gb, with no other discernible difference, you can bet your bottom dollar they will use the same board, and simply de-populate that extra SDRAM circuit. It's cost effective.

[@g.mendoza8138]

Very interesting.

[@billsmith56]

220PF may be small, but it's better at cleaning RF from that line than an electrolytic.

[@MmmM-bq1eo]

good job , God bless

[@SurRon-GLE]

Your Awesome Lady

[@wilfredcatapang7219]

I like your video.. love it

[@jamesking4308]

Love it! :)

[@iselectpremium]

Parabéns, adorei.

[@SmoosWorkshop]

what flux do you use for reflow soldering?

[@yasinkhanmobilesolution7766]

Thanks I injoy look video

[@zaimsadikovic]

Hey Jessa, I have the same Multimeter and you can turn off the automatic power off if you hold down the „Range“ button and then hold the power button. It beeps 5 times and then it won‘t power off automatically again

[@aqib2000]

When doing this video you should have also checked between the 3 pins for continuity after replacing the choke (as you know it’s very easy to bridge the pads at the inductor)

[@luisvilleza2687]

Thats really cool thanks for sharing your tester keeps beeping

[@antoniofernandes5072]

If you dont have another working phone, you can use i bridge to see the value of pin´s conector right?

[@MarvelousMarvinB]

where can i find the schematic program and schematics you use? Is this a service I can purchase?