How To Reball iPhone 14 Pro Max Sandwich - 2 Layer Motherboard. Can I Fix It? No Service No Signal.

Did you know, the iPhone 14 Pro Max is a 2 layer motherboard sandwich. So when these 2 layers separate, it can cause several issues, like No Service, always Searching and No Signal.
In my last video, I showed how to separate the 2 layers using a heat plate. Watch here: • Can I Add a Sim Slot t...
So now it's time to solder it all back together.
Also, I added a SIM Slot. So let's see if we can get the SIM Slot working!
Let me know your thoughts below!
▶X360 V2 Sandwich Splitter: www.injuredgadgets.com/xinzhi...
▶Aixun T3B Soldering Iron Station: bit.ly/3tCVOe7
▶Top Layer Solder Wire (183C): amzn.to/3OgqTfP
▶Bottom Layer Solder Wire (Super Low Melt 138C): www.injuredgadgets.com/mechan...
▶Amtech Flux: www.injuredgadgets.com/catalo...
▶Orange Foam Swabs: amzn.to/3Senxw9
▶DT880 Mini DC Power Supply: vccboardrepairs.com/buy-dt880
▶iPhone 13/14 Cable for DT880: www.injuredgadgets.com/mechan...
🚨 Support the channel by checking out these links🚨
🏆Become a member of my new Private Community of VIP Techs: vccboardrepairs.com/locals-co...
👨‍🎓 Want to join our 90-Day Microsoldering Mentorship Program? Click here: vccboardrepairs.com/90-day-co...
🔥 Full list of tools I recommend: www.vccboardrepairs.com/gear
🧾Contribute to repair solutions to the Repair Wiki: repair.wiki/w/Repair_Wiki
🚨 Do you need your iPhone or iPad repaired? Send me a message for a quote: www.vccboardrepairs.com/conta...
►Check out my new T-Shirts, Hoodies & more: merch.vccboardrepairs.com
►Amazon Storefront: www.amazon.com/shop/vccboardr...
►Join the new Facebook Group for Repair Techs vccboardrepairs.com/vcc-fb-group
🛒Buy The Seek Stand by VCC Board Repairs here: vccboardrepairs.com/buy-seek-...
🕶 Buy Macro Lens here: www.vccboardrepairs.com/buy-m...
📸Buy The Seek Compact Pro here: amzn.to/34I4whX
🚀Today's shirt can be purchased here: merch.vccboardrepairs.com/lis...
► Like us on Facebook: / vccboardrepairs
► Follow us on Instagram: / vcc_board_repairs
⚠ B2B & Wholesale pricing for mail in repairs is available for repair shops in the USA. Contact us for more information: www.vccboardrepairs.com/conta...
Please note: This page contains affiliate links. If you choose to make a purchase after clicking a link, I may receive a commission at no additional cost to you. Thank you for your support!
Timeline:
0:00 Intro
0:38 Testing iPhone 14 Pro Max, top board only
1:14 Visual inspection of the top board under the microscope
2:22 Adding solder to the top layer interposer pads
11:32 cleaning the flux off the board
11:46 Adding solder to the bottom layer interposer pads
21:34 Talking about the SIM Slot & the eSIM circuitry.
24:32 Comparing iPhone 13 Pro Max logic board to the 14 Pro Max
27:11 Reviewing the SIM Slot & eSIM connections on ZXW Boardview Software
34:52 Sandwiching the 2 layers together
44:38 Reviewing the sandwich from the sides & using hot air to close the gap
48:37 Testing the board after the reball
49:40 Reviewing the board under the Seek Thermal Camera
50:15 Splitting the sandwich again & inspecting the board
53:22 Found the problem
54:51 Hand Reballing the sandwich again
1:13:15 Testing the logic board again with DT880
1:13:45 Testing the board in the housing
1:14:45 Reviewing the Cellular Settings to see if SIM slot works
1:16:10 Outro

[@VCCBoardRepairs]

Have you checked out Louis Rossmann's Repair Wiki? It's a crowdsourced solution site. Anyone can contribute solutions for fixing any electronics. Check it out here: repair.wiki

[@bh6239]

Stressful with no stencil . But I know your level you are the man

[@VCCBoardRepairs]

Haha. It wasn't that bad actually.

[@khan-jz5gd]

Keep making these good videos, really help us a lot

[@jeremyswanson6661]

Great stuff Jesse. My guys at Alamo Device Repair in Alamogordo, NM, are really inspired by your expertise.

[@VCCBoardRepairs]

I really appreciate your support. Thank you so much

[@motekso787]

Hey cheers for the content, with the Aixun T3B Intelligent Soldering Station With T210/115 Handle Welding Tips which handle do you prefer and would you recommend all 6 tips or would 3 suffice?

[@al7la670]

Good work🤙

[@VCCBoardRepairs]

Thank you very much!

[@maikelacosta630]

I understand the level of skills involving this process. I think first try was maybe two soldering contacts fused together. Maybe that's the reason because the main board was in short state. Is super hard to work without the stencil. Keep the good work 👍 new subscriber here .

[@VCCBoardRepairs]

Thank you! Appreciate the support!

[@disfircasi00]

If you get the right tools, equipment, practice, and not shaky hands, you can do all this; it's straightforward. Of course, it's still a new thing for micro soldering; there might be a college degree in the future for micro soldering. However, it will increase the number of technicians in the industry and lower the general labor pricing, which is terrible. Still, I think it will happen in the next 10-15 years.

[@discipleofgod5948]

Hi mate, nice to see someone brave enough to do some research and development on devices. I'm curious to know whether the sim card tray worked and also is it legal to do such modifications?

[@VCCBoardRepairs]

It's not illegal because i own the product. So I can do whatever i want with it. But then again, i'm not a lawyer lol

[@mobilesouq-jj2yp]

hello brother which microscope are you using....pls share the details.....

[@dmitrynesterov2148]

Hey Jesse, Great stuff, thanks for spending time experimenting with this. Questions: 1. Don’t you need to re-apply a thermal paste on the processor before you put boards together? Original one was brushed off. 2. While soldering two boards together you pushed top one with a tweezers. Isn’t to risky to have a solder pushed off and create a bridge? Thanks!

[@VCCBoardRepairs]

1. I never replace it 2. No when you hand reball like this, because the solder joints are very small.

[@jorgejuancn]

Amazing and hard work at the same time. I suppose that you use Sn/bi paste. What temperature did you set the soldering iron? The good news is that there is no short when you connect the layers. Thanks for the video.

[@VCCBoardRepairs]

Thank you! I use 380C on my iron for everything.

[@invest_future]

You're a legend

[@VCCBoardRepairs]

thank you, Fidel Castro

[@JohnWilliams-zo5jf]

Great video❤🔥🔥🔥 But I think the 14 and 14 plus will be very difficult to separate and combine

[@VCCBoardRepairs]

Thank you! I may need to get a 14/14P to try it!

[@praphaukarraaj4754]

Hi sir in this iphone 14 pro , did apple using higher temp like iphone 12 and 13

[@VCCBoardRepairs]

Yes

[@tylermeehan8628]

I stand corrected 😂 I didn’t think a hand reball would work

[@discipleofgod5948]

Reballing by hand is tricky but never impossible. I've never used a stencil before.

[@VCCBoardRepairs]

I've done many 12 series successfully, but maybe like 50/50 chance it works the first time lol

[@duanemassey4560]

Can you short pads together if you squeeze the boards too much?

[@VCCBoardRepairs]

Not if you hand reball. very little solder on both sides.

[@duanemassey4560]

@@VCCBoardRepairs So more risk via reball stencil? If using stencil, best to reball one side only?

[@flamingkillermc2806]

If this works I would totally pay for this service, a 5G mmwave US model with the sim card slot, you probably can get a 3rd party housing that has the cutouts for the 5G mmwave antenna and the simcard slot.

[@VCCBoardRepairs]

Haha yes! I am working on the solution

[@Matic96ITA]

Can you please tell me if the NAND IS UPGREADABLE without copying the wifi and bluetooth data?🙏🏻🙏🏻

[@VCCBoardRepairs]

That's a good question! I don't have a stencil, so I can't try this yet.

[@Matic96ITA]

Here it is!☺️

[@Matic96ITA]

You can find it on aliexpress🙂

[@trilexfix]

Have you ever tried 60/40 kester ?

[@VCCBoardRepairs]

I havent

[@VCCBoardRepairs]

Should I try removing the eSIM IC and see if that makes the SIM Slot work? 👀

[@flamingkillermc2806]

Yes, technically you should be able to put a (esim and physically sim) one found in the 13 pros and it should work perfectly. Hugh Jeffreys did a dual physical sim iPhone 12 (found in china version) since the sim cards on the iPhone 12's were upgradeble. And it worked perfectly fine. Also upside is that you get 5G mmwave if you do that on a US models while EU or CA or China editons do not have 5G mmwave for some reason

[@VCCBoardRepairs]

@@flamingkillermc2806 You can watch this video once it's live, so you can see if it worked or not 😅

[@invest_future]

Bro, if you have the opportunity, try activating the esim on 13 first, and then rearranging it to 14, if it works, we won't need a physical SIM card

[@PaulCouzens83]

its not a failure rate thing apple devices always fail its built in in general but then just look at the component density vs any other device, its drastically over engineered and is almost bound to fail especially as the tolerances of some components are huge. i work with more samsung than i do apple by easily a rate of 10 to 1 or more yet i still do more board repairs on apple and the ones i do on other devices usually have a direct cause eg clipped off caps on an S21U also i have never once seen a samsung sandwich board with a layer/reball issue, it just doesnt really happen that often

[@VCCBoardRepairs]

Good points! I havent seen samsung sandwich problems either.

[@daotringuyen]

i don't understand why when starting the iphone we care about the inrush current as 80mA what does it mean, if the inrush current is not 80mA then we have problem ??

[@VCCBoardRepairs]

Basically. Yes.

[@daotringuyen]

@@VCCBoardRepairs What does 80mA current mean? is the phone in DFU mode?

[@kasimmohammed4554]

World boss

[@VCCBoardRepairs]

Awesome! Thanks Kasim Mohammed

[@user-hv1yu5nb9m]

how switch motherboard 14pro to 14promax for swap?

[@VCCBoardRepairs]

Check repair wiki reference page: repair.wiki/w/IPhone_14_Pro

[@user-hv1yu5nb9m]

@@VCCBoardRepairs thanks a lot

[@rafaelbernal3473]

let me guess, high melting point solder?

[@VCCBoardRepairs]

Yep. Since the 12, they're not going back to the low melt 🥲

[@psp4gamer]

Is there a real cause to this problem? Other than impacts and things like that since i have seen iphones 11 and 12 smashed to the point of housing on life support but pretty much alive without any problem on the board.

[@VCCBoardRepairs]

impact and bends will disconnect the 2 layers. yes, there's a chance a board will get smashed but still work fine. but in many cases, they won't work fine. They'll have issues.

[@psp4gamer]

@@VCCBoardRepairs But still this seems very random. I have seen the smallest of impacts and then the whole screen cracked (wood table) and the hardest of harsh impacts like on ceramic desks and everything is fine (i guess the marketing was real? In the 13) and destroyed iPhones to the point of glass cracked from both sides, bent, and really working 100%. So i guess a small impact on a relative soft surface won’t do anything? (And yes to the 100% functionality, that’s why im still quite confused about it)

[@VCCBoardRepairs]

I am literally working on an iPhone 13 right now that has no service because of a hard impact. Has over 50 ripped pads I also have other videos on my channel on this issue kzbin.info/www/bejne/nKa3Z6BpZa5sd6M Maybe you're just lucky 😅

[@psp4gamer]

@@VCCBoardRepairs Not me really, my closest circle of friends. Im not even an iPhone user, but this pattern still amazes me on how random QC can be.

[@anatolii8733]

если честно то я с тобой учу английский технический)и

[@VCCBoardRepairs]

spaisiba

[@nagases1572]

why didnt you bother to wick the sandwich first?

[@VCCBoardRepairs]

to save time.

[@scorz789]

Hey there hacker.

[@VCCBoardRepairs]

Hacker? What do you mean?

[@scorz789]

@@VCCBoardRepairs yeah bro. Can you plz return me my account ? I express my view for tips and next day my account is hacked (only Facebook) so idk if it’s a crazy coincidence. But please if you have done it kindly return. It’s just for my interactions in the fb groups. Thanks.