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

Hi,

I'm hoping you can help me out with my BLACK ZONE Heaven. 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.

@Yasser

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 BLACK ZONE Heaven 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://xdaforums.com/t/xperiatized-major-problem.1593827/
Take a look at comment #757
Also, this : https://www.ifixit.com/Answers/View/584925/Samsung+Monitor+with+black+vertical+line.
You can also check this video starting from minute 8:

The BLACK ZONE Heaven 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 BLACK ZONE Heaven 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 BLACK ZONE Heaven 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 BLACK ZONE Heaven 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/Guide/How+to+Replace+a+Chain+Link+Fence+Gate/78371

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

If 5V is absent, the issue is likely the charging port or the flex cable leading to it. Apply a thin, even layer of solder paste to the clean pads on the logic board, or, for some packages, you can tin the pads and use the "drag soldering" method with a fine iron tip. CPU Throttling Test (Android): This app is specifically designed to run a sustained CPU load and display how much the CPU performance is throttled over time as the temperature rises. Fault Points: Communication can fail at the module IC itself, the SoC, the traces on the PCB, flex cables, or the connectors. Outdated OS or App Bugs: Software bugs or poor optimization in the operating system or certain apps can lead to inefficient resource management. Go to Settings > Accessibility > Touch > 3D Touch or Haptic Touch Sensitivity and test the slider. Once the adhesive is pliable, use a suction cup to create a small gap between the display and the frame, then insert a thin pry tool. Identifying smartphone USB-pin oxidation is a crucial diagnostic step when troubleshooting charging, data transfer, or accessory connection issues. Internal Reset Lines: Dedicated electrical pathways on the PCB that carry reset signals to various components. If the Tristar itself is getting hot, it's a strong indicator of its failure. Note: Be very careful not to short the battery terminals with your probes. To prevent color calibration issues in the future, be mindful of the apps you install, especially those that request permissions to modify system settings or draw over other apps. Screenshot Test (Crucial Step): Take a screenshot of your phone's screen while the lines are visible. Magnification Tool: A jeweler's loupe (10x-30x), a smartphone microscope attachment, or a dedicated repair microscope is essential for detailed inspection of tiny pins. Use your multimeter in continuity mode to confirm if there's an open circuit (if the trace is severed) or if it's potentially shorting to an adjacent trace or ground. The pins are too tiny to see and solder accurately with the naked eye. Temperatures typically remain within safe operating limits, and performance might slightly reduce but not to a crippling degree. This signature is a series of rising and falling current draws, representing different stages of the phone waking up and loading its operating system. Replacing the BMS flex cable, especially when transferring the original BMS to a new battery cell, is an advanced repair that requires patience, a steady hand, and good microsoldering skills. Remember that specific steps might vary slightly between phone models, so always refer to a model-specific guide in conjunction with these general instructions for the best results.## 6. There is no publicly available "reprogramming" tool for this outside of Apple's authorized service channel. A consistent creaking sound when gently squeezing the phone could also be indicative of uneven pressure from poorly seated screws. Access: Remove any internal components, shields, or screws that obstruct access to the faulty microphone's flex cable. While some bootloader issues can be resolved with advanced software flashing, hard bricks often point to more severe hardware failures requiring expert intervention.How to analyze smartphone RAM-related malfunctions Traditional Home Buttons (Older Android/iOS): Simply a tactile switch (physical click) and sometimes a flex cable for basic navigation. Ensure this feature is enabled and perform a manual backup just before sending your phone for repair. Display Driver IC Replacement: If the display driver IC on the logic board is faulty, it can be replaced. Inspect Pads Thoroughly: Under the microscope, inspect every pad for integrity. Transfer components: If any components (like the wireless charging coil, NFC antenna, LED flash diffuser, or buttons) were attached to the old ceramic back, carefully transfer them to the new replacement part. When this decryption process fails, the phone becomes essentially an unusable brick until the issue is resolved.

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