[SOLVED] I'm looking for NOA F10 Pro repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my NOA F10 Pro. It's started acting up, and I'm looking for a detailed service manual with boardviews and schematics to properly diagnose and repair it. I need to take precise voltage measurements around the board, so having the right documentation would be very helpful.

Thanks in advance for your help.

Selected Answer

I actually found that service manual on a tech Discord server a while back. A really helpful member there shared a direct link to their blog and I've saved it. I'm happy to pass it along here. Hopefully, these boardviews and schematics help you fix your phone, just like they got me through my repair. Looks like we have the same model.

@Ayşe

Absolute legend! That's exactly the info I was searching for. This is going to save me so much time probing in the dark. Seriously, thanks a ton for sharing the link!

Hi there,

I also have the NOA F10 Pro and just downloaded the manual you shared. I'm pretty new to board-level phone repair, and this is a bit intimidating with all the tiny test points and the schematics. Could you point me in the right direction on how to start troubleshooting this ? Any advice on the first few things I should check would be a massive help.

Thanks so much for your time

General advices: start by checking the voltage at the battery connector on the board. With a known-good battery connected, you should see a steady voltage between 3.7V and 4.2V. After that, a great next step is to check the main power management IC (PMIC) for shorts. Using your multimeter in diode mode, check for shorts on the large input capacitors surrounding the PMIC.

Here are a few useful references for troubleshooting your device:
https://www.ifixit.com/Guide/Thermaltake+Theron+Plus+Button+Fix/110268
Take a look at comment #344
Also, this : https://www.ifixit.com/Answers/View/344826/Replaced+Logic+Board+w-+Used,+Can't+Log+In.
You can also check this video starting from minute 10:

The NOA F10 Pro service manual and boardviews from the link above were exactly what I've been searching for. I couldn't find a complete, free copy anywhere else. Seriously, thank you for sharing this you're a lifesaver!

Hi everyone, I'm working on a NOA F10 Pro with a no power issue and need some guidance with my measurements.
I'm detecting 3.3V on the VREG_MAIN line (pin 1 of the PMIC), which looks good, but I'm getting 0V on the VDD_CPU line (pin 8) where the schematics indicate I should see about 0.9V.
Since this is a core voltage for the application processor, could this missing rail be why the device shows no signs of life?
What's the best procedure to diagnose this further? Should I check for shorts on the CPU rail first, or look at the PMIC's enable signals?
I've already verified the main 3.3V and 1.8V power rails are present and stable.

My NOA F10 Pro was working perfectly until yesterday when it suddenly went completely dead. Now it won't respond to the power button, doesn't vibrate, and shows no signs of life even when connected to a charger. I'm worried there might be a serious issue.

I have a decent multimeter, a basic soldering iron, and a healthy dose of patience. While I've successfully replaced iPhone batteries and charging ports, this will be my first attempt at actual diagnosis. The sheer density of BGA chips and microscopic components is honestly a bit overwhelming.

I'm particularly curious about the alcohol trick I've seen online where you apply isopropyl to the board and look for evaporation hotspots to locate shorts. Is this actually a reliable method for beginners, or are there better approaches I should try first with just a multimeter?

I learned this lesson the hard way last month with mine, it was declared "dead" by two different shops. The phone showed absolutely no signs of life - no charging indicator, no vibration, nothing. Before diving into complex board work, I decided to try one more basic test: wireless charging.

To my complete surprise, it actually heated up on the charging pad! This single discovery completely changed my diagnostic path. It turned out the issue wasn't with the main board or processor, but with the notoriously fragile USB-C port that had failed completely. A $15 replacement part and some careful soldering brought it back to life.

The moral? Always exhaust every external testing method before opening the device. Test wireless charging if available, try different charging methods, and don't assume the worst case scenario. Sometimes the most "dead" devices have the simplest solutions hiding in plain sight.

I suspect my issue might be related to that cheap, third-party fast charger I used at the airport last week... Now the device gets extremely hot during charging, the screen flickers at low brightness, and sometimes it randomly shuts down at 30% battery. Could this have damaged the power management IC or battery calibration?

If your NOA F10 Pro starts acting up, random reboots, fast battery drain, or connectivity issues, there are several diagnostic steps you can take before assuming the worst:

• Check your charging habits: Using poor-quality chargers or wireless pads can gradually damage your battery and charging circuit, leading to unpredictable behavior.
• Inspect the physical components: A slightly damaged charging port, worn battery, or even accumulated pocket lint can cause issues that seem like major hardware failures.
• Monitor temperature patterns: If your phone gets unusually hot during specific tasks (like camera use or gaming), it could point to a failing component rather than a software issue.
• Use diagnostic tools wisely: Ampere for battery health, phone diagnostic codes (*#0*# on many models), and a thermal camera can reveal problems without opening the device.
• Know when to stop: If you see liquid damage indicators tripped or smell burnt electronics, it's time to consult a professional before causing irreversible damage.

Also visit this link it may help : https://xdaforums.com/t/otg-help-plz.1991774/

Here's what I discovered on forums and technical databases:

Visual Check: Look inside the charging port for lint, dust, or debris that might prevent full contact. This tint might be uniform across the entire screen, or it could be localized, with one part of the screen appearing greener and another part pinker. BGA components, with their array of solder balls underneath, are particularly challenging for repair, requiring specialized rework stations for removal and reballing. Purpose: Electrostatic discharge (ESD) can permanently damage sensitive electronic components. Users might also notice that their phone frequently prompts them to "calibrate compass," indicating persistent instability. Static discharge, if proper ESD precautions are not followed during repair or if the phone's internal grounding is compromised, can also fry the sensitive touch IC. When this shielding is damaged or missing, it can lead to unexpected shorts, degraded performance, or increased vulnerability of delicate internal components. In summary, safely bending a smartphone flex cable back into shape is a delicate dance between encouraging a curve and avoiding structural damage. Phone requires manual unlock: Despite having Trusted Face enabled, the phone always asks for your primary unlock method (PIN, pattern, fingerprint). Documentation (with Camera): If using a microscope with a camera, capture images or video of any identified damage. Troubleshooting Wi-Fi and Bluetooth issues requires a systematic approach, distinguishing between software glitches, network configuration problems, and more complex hardware failures. Burn-in, more accurately called image retention or ghosting, occurs when static images or elements (like navigation bars, status icons, or keyboard outlines) are displayed on the screen for prolonged periods, causing those pixels to degrade unevenly and leave a faint, permanent ghost image visible even when new content is displayed. Stereo Microscope: Essential for visibility, alignment, and inspection (e.g., AmScope, Aven). In conclusion, preventing smartphone theft during the repair process is a multifaceted endeavor that demands continuous vigilance and a commitment to robust security practices. If the problem persists after a factory reset (and without restoring a backup): This is a very strong indicator that the issue is hardware-related. Use a very fine-point utility knife or blade (with extreme caution) to gently scrape or pry the old mesh out. When to Use: Any screw with a head that is accessible and slightly raised. Plastic Opening Tools (Spudgers): For prying open the casing and disconnecting delicate connectors. Essential tools include a precision heat gun or a hair dryer, a fine-tipped metal spudger or razor blade (exercise extreme caution with these), plastic opening picks, fine-tipped tweezers, a clean microfiber cloth, isopropyl alcohol (99% concentration), and optionally, a B-7000 adhesive glue if your replacement part does not come with pre-applied adhesive. If it's crooked or partially lifted, sound waves might be trapped or redirected, leading to muffled audio. The camera module is usually located near the top corner of the phone, often under a metal shielding plate or directly mounted on the logic board. If a new, confirmed working display assembly and battery don't resolve the ghost touch, the issue might stem from the touch controller IC on the logic board itself. Replacement Micro-USB Port/Flex Cable: Ensure it's compatible with your specific phone model. Separate Boards: Once the solder melts completely, carefully and slowly lift the top board straight off the bottom board using specialized tools or fine tweezers. This usually involves removing screws, applying heat to soften adhesive (for screen assemblies or back covers), and using plastic pry tools. Despite their critical role, ribbon cables are incredibly delicate and one of the most common components to be damaged during smartphone repair, often leading to frustrating post-repair issues. Inventory Management: Aids in tracking part consumption and reordering. Continuity Test: In continuity mode, touch one probe to a specific pin on one end of the flex cable connector and the other probe to the corresponding pin on the other end (or on the component it connects to). Research Your Phone Model: Find a detailed repair guide or teardown video (e.g., on iFixit, YouTube) specific to your smartphone model. It should only be attempted after the underlying cause of the fuse blowing has been definitively identified and resolved.

@Cristina, Not sure what you're trying to say but ok :)