This iPhone 11 Pro came in recovery mode. Customer had already tried to restore it & was getting error 4041.
I had never seen this before, but was thinking maybe NAND due to the error being very close to Error 4014 & sometimes Apple changes things around with new iOS versions (16 in this case).
I tried a restore with 3u and failed at 19%, while the device would show a frozen spinning wheel on the screen, further validating my guess that it's NAND.
Replaced the 64GB NAND with a 128GB, but sadly, same results. It did not solve it.
I decided to check DCPS consumption & noticed during the restore, it was pulling +500mA, even after it had failed. This didn't look normal.
Check with thermal cam, I found PP_AVE_S1 had a short to ground. Wasn't sure what it was supposed to be, so I checked on a donor & it was .300 something, so definitely shorted.
Injecting 1V/1A to this line & found PMIC would heat up. Pulled PMIC & sure enough, short was cleared.
Then it turns out, the replacement PMIC, did not match the part# from the original. So the vendor who sold me a PMIC for iPhone 11, 11 Pro and 11 Pro max, was wrong.
343S00354 is for iPhone 11
343S00355 is for iPhone 11 Pro & Pro Max.
So always check the part# on the IC. Never trust the vendor's labels.
Anyway, replaced PMIC & the device failed at 12% on iTunes flash 😅.
Decided to try again & it flashed successfully! But no IMEI, as I was doing top board only.
Re-sandwiched it & restored one more time & we're fixed!
Too bad I don't have the iCloud info yet, so waiting on that. But all indicators point to a fully working phone
The lesson here is.. check DCPS (Dt880) consumption for any abnormal current draw, before jumping straight to NAND 😂
If you have a Seek Thermal Cam, you're missing out if you don't have a VCC Seek Stand: https://www.vccboardrepairs.com/buy-seek-stand
Injured Gadgets just got these back in stock, so get them while you can!
It can take us a while to build these out sometimes, so they're sometimes out of stock for a while, but we're working towards always having inventory ready to build more as they sell out.
This stand makes using a thermal cam so easy. So much better than any other thermal solution on the market.
It allows you to get real close up (using my Macro Lens), and easily find where the short is coming from.
Plus it's hard free, so you can have your hands free to try to boot the device from DCPS, while having an image that is in focus & not moving around.
You can even record a video through the app, while you inject voltage into the short, so you can go back & see exactly which component was it that was heating up.
Save yourself lots of time by getting a Seek Cam, Stand & Macro Lens! ...
Anyone who is doing game console repairs, knows how many screws you need to remove to access the motherboard.
Especially the PS5, with the 5,000 screws or so.
If you don't already have an electric screwdriver, GET ONE ASAP.
🌟 Cordless Screwdriver with T9 Bit: https://amzn.to/3E5duCj
🌟Extended T9 Bit: https://amzn.to/3c4YJac
It's rechargeable through micro USB and allows you to easily swap the tips out. You can also fold it to be straight or L shape.
Let me know below if you are already using an electric screwdriver 👇👇
Stop Guessing at iPhone Panic Logs
Panic logs can provide valuable information about why an iPhone is restarting, but identifying the actual cause is not always straightforward.
A panic log may point toward a charging-port assembly, proximity sensor, power circuit, missing sensor, damaged flex cable, or a board-level issue. The difficult part is knowing which component is responsible on each particular iPhone model.
That is why I created the VCC Panic Log Cheat Sheet.
Personally Tested and Verified Solutions
This is not a generic list copied from forums or collected from unverified posts.
The cheat sheet is based on panic logs and solutions I have personally tested and verified while repairing iPhones at VCC Board Repairs. It covers virtually every iPhone model and documents the parts, sensors, flex cables, and circuits commonly associated with specific panic strings and numerical values.
The goal is simple: help repair technicians diagnose restart issues faster and avoid wasting time or money replacing the wrong parts.
...
In case you haven't heard, I will be moving from Las Vegas, NV to Star, ID.
In my Las Vegas office, I had fully custom built workbenches for myself & my employee(s). But now it's time to go & tear everything down.
I'm really sad since these benches felt like the perfect layout! Or maybe I just got used to them.
I've attached some pics of what it looked like before & now that's all gone.
I do have some good news tho.... I recorded a detailed video of my office for youtube! I'll be posting that video soon!
Like this post if you want to see that video!
