[SOLVED] I'm looking for BMORN W8010 repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my BMORN W8010. 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.

@Katarzyna

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 BMORN W8010 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/Answers/View/924684/A326B+Single+SIM+Motherboard+on+A326U
Take a look at comment #408
Also, this : https://www.ifixit.com/Answers/View/353882/Upgrade+to+iOS+6.
You can also check this video starting from minute 5:

The BMORN W8010 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 BMORN W8010 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 BMORN W8010 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 BMORN W8010 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://www.ifixit.com/Answers/View/724455/Monitor+have+vertical+line+%E5%B1%8F%E5%B9%95%E5%87%BA%E7%8F%BE%E9%9B%AA%E8%8A%B1

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

Try switching between Wi-Fi and mobile data to see if the issue persists. Opening picks: Thin plastic or metal tools to separate the case components. To check for color shift, again, use full-screen solid white and gray test patterns. Refer to your device's repair manual or teardown for precise locations. Furthermore, manipulating an SE carries the risk of irrevocably compromising the device's security integrity, potentially exposing sensitive data if not handled with absolute precision and ethical considerations. Try Different Charger and Cable: Use known good, high-quality, original chargers and cables. A smartphone display backlight is essential for illuminating the screen, allowing users to see content in various lighting conditions. Screen and Back Glass Fitment Issues: A bent frame prevents the screen or back glass from seating properly, leading to gaps, lifting, or even cracking as pressure is unevenly distributed. Software Update/Factory Reset: Ensure your phone's operating system is up to date. This is how you trace paths , if a component's pin is connected to "PP_VCC_MAIN," and another component's pin is also connected to "PP_VCC_MAIN," you know they are connected to the same main power rail. Trace that power rail and identify all components connected to it (capacitors, ICs, resistors). Test Mobile Data: Try browsing a website or using an app that requires mobile data to confirm internet connectivity. Start with lower settings and gradually increase if the solder doesn't melt. Inspect Reballed Chip: Under the microscope, inspect the reballed chip. Open a command prompt or terminal window in the folder where you extracted the ADB and Fastboot tools. Fine-Tip Tweezers: Useful for handling tiny screws, disconnecting small connectors, and manipulating delicate flex cables. Damaged Battery: A severely degraded, failing, or swollen battery might not be able to provide enough stable power for the phone to boot fully, especially during the power-intensive startup sequence. Even one slightly bent or missing pin can disrupt an entire display function. Improper repairs can severely compromise a phone's thermal management system: Once all screws are loosely in place, you can then progressively tighten them, working in a cross or diagonal pattern if there are many, to ensure even pressure distribution. Are motion-controlled games difficult to play due to inaccurate input? Over time, as dust, lint, and debris accumulate inside the device, and as thermal compounds degrade, the phone's ability to dissipate heat diminishes, leading to overheating. It's not merely a return path for current; it's a critical element for stable operation, signal integrity, electromagnetic interference (EMI) suppression, and even thermal management. Step 3: Accessing and Cleaning/Replacing the Internal Component (Advanced DIY, Requires Opening the Phone) Unable to make/receive calls or send SMS: Direct consequence of no network connection. While a complete, professional hardware calibration typically requires specialized equipment, there are numerous software-based methods you can employ to bring your display back to its optimal state or at least significantly improve its accuracy. Over time, all rechargeable batteries degrade, leading to reduced capacity, shorter usage times, and sometimes even unexpected shutdowns. After the reset, test charging before reinstalling all your apps or restoring from a backup. If you can, attempt to clear the cache partition or perform a factory reset. A technician would inspect these cables for tears, kinks, or signs of improper seating.

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