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

Hi,

I'm hoping you can help me out with my KALLEY Silver Max 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.

@Yassin

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 KALLEY Silver Max 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/Toshiba+Satellite+Radius+P55W-B5112+Hard+Drive+Replacement+Replacement/100581
Take a look at comment #514
Also, this : https://xdaforums.com/t/trick-enable-xloud-in-any-xperia-2011-in-ics-and-gb-root-not-required.2325282/.
You can also check this video starting from minute 1:

The KALLEY Silver Max 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 KALLEY Silver Max 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 KALLEY Silver Max 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 KALLEY Silver Max 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://www.ifixit.com/Answers/View/523060/There's+a+hole+in+my+vacuum+hose

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

Turn off "Automatically select network" and let your phone search for available networks. Residue Won't Soften: If glue remains stubbornly hard, try applying a little more heat for a slightly longer duration, or apply IPA and let it sit for a minute before attempting to scrape again. These shields usually need to be carefully removed with hot air or a dremel, being cautious not to damage the IC underneath. It receives signals from the power button and initiates the boot process, monitors battery, and manages power to other components. If still problematic, the digitizer part of the screen might be faulty. Cycling Current (Boot Loops): The current rises to a certain point, then drops back to 0mA or the initial spike, and repeats. While not directly about refresh rate, it's part of the complete display functionality. The front-facing camera, often referred to as the selfie camera, has become an indispensable feature of modern smartphones. Replacing a cracked or damaged display bracket is a complex and time-consuming repair due to the sheer number of components that need to be transferred. Use Plastic Tools: Always use a plastic spudger or even your fingernail (if clean and trimmed) to pry connectors. Prepare Jumper Wire: Take a length of enamel-coated jumper wire (magnet wire). They might have more advanced tools, like JTAG (Joint Test Action Group) or ISP (In-System Programming) boxes, that can communicate directly with the phone's eMMC/UFS storage to re-flash the bootloader or entire system, even on devices that appear completely dead. Disassembly: Carefully open the smartphone, disconnect the battery, and remove the motherboard from the chassis. Replacing internal plastic shielding requires careful handling of delicate parts and precise placement. Inspect and Reseat Connectors: Using a microscope or magnifying lamp, meticulously inspect the flex cable connector itself and its corresponding socket on the motherboard. Structural Support: Some guides also act as small brackets, providing minor support to components or the frame. Post-Removal: Clean the pads with desoldering braid and isopropyl alcohol. No Heat: Do not apply heat to the battery or the phone near the battery if you suspect liquid damage, especially if the battery is swollen. The causes of touch IC failure are varied, with physical impact being a predominant factor. Fine-tipped Tweezers and Spatulas: For chip manipulation, stencil work. Disconnect Camera: Using a plastic spudger, gently pry up the camera module's flex cable connector from its socket. Magnifying Glass / Microscope: For close inspection of motherboard components. However, some Android phones retain under-display fingerprint sensors or physical buttons. You can also ask friends or family on the same network if they are experiencing similar issues in your current location. Without internet access, the device cannot verify accounts, download updates, or restore backups, effectively halting the process. It signals that your device can no longer read or write to your external storage, potentially locking away precious photos, videos, and documents. A heat gun or a standard hair dryer will be needed to soften the adhesive that secures the display to the phone's frame. Safety Glasses: Essential to protect your eyes from flying glass shards. This will typically be a small ZIF (Zero Insertion Force) connector or a standard snap-on FPC connector. Ground Planes/Shielding: Larger chisel tips (2.0mm, 2.5mm) are good for soldering or desoldering metal shields and components connected to large ground planes due to their superior heat transfer capability.

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