Forum Phones & Tablets Repair
Discussion Starter - #1 - 1 week ago

Hi,

I'm hoping you can help me out with my InFocus M560. 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.


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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.



>>>> InFocus M560 maintenance guide & schematics (pdf + fz)

Good luck

Discussion Starter - #3 - 1 week ago

@Nino

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 InFocus M560 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/Nite+Ize+Inova+Microlight+Casing+Replacement/30506
Take a look at comment #366
Also, this : https://xdaforums.com/t/using-g2x-to-bridge-wifi-is-it-possible.1281578/.
You can also check this video starting from minute 9:


The InFocus M560 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 InFocus M560 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.



emoji scratching head

My InFocus M560 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 InFocus M560 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/401477/Fog+Light+Cover+Replacement

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

The earpiece mesh and speaker grills on a smartphone are vital for clear audio communication and media playback. New Adhesive Strips: If your phone's back cover or screen uses adhesive for sealing. After the new coaxial antenna cable(s) are securely connected and routed, reverse the disassembly steps. Removing the back cover: (Common for many Androids) Heat the edges to soften adhesive, use a suction cup and pry tool. If external checks and software troubleshooting don't fix the issue, the problem likely lies with the physical button mechanism or its internal flex cable. By carefully following these steps, from proper preparation and gentle heat application to meticulous cleaning and precise installation, you can restore your device to its former glory. It's often integrated into the back glass, the camera bezel, or the mid-frame. This is a critical step; a misalignment will result in an uneven seal and potentially cracked glass. Step 4: Compressed Air (Optional): After dislodging the lint, use short bursts of compressed air to blow out any remaining debris. A professional can accurately diagnose whether it's a loose connector, a faulty antenna, or a complete Wi-Fi IC failure, and advise on the most cost-effective solution.3. Refusal of Service for Blacklisted Devices: Repair shops should have a clear policy of refusing any "IMEI repair" service aimed at unblocking blacklisted devices. After the battery is disconnected, the immediate risk of thermal runaway is greatly reduced, but it's not entirely eliminated, especially if the battery is swollen. Smoother Videos: Eliminates distracting jitters, making videos much more professional and watchable. Prepare New Component: Ensure the new backlight filter component is clean and free of oxidation. The initial step in inspecting vibration motor alignment is to understand the typical signs of misalignment. If the phone's CPU (which holds the decryption keys) is dead, the data is essentially locked forever, even if the eMMC/UFS chip is perfectly readable. Customer's signature confirming receipt of the device and satisfaction with the repair. Quality Parts: Use reputable suppliers for replacement parts to avoid premature failure. `Show taps`: This displays a small circle or dot on the screen wherever a touch is registered, allowing you to visually see the registered touch point versus your actual finger contact point. Shake the phone gently (without the camera app open) and listen for the normal OIS rattle. It feeds this data to the Neural Engine within the A-series chip, which then compares the captured 3D map to the enrolled Face ID data. Schematics and Boardview: Consult official schematics and boardview software for the specific phone model. From physical safeguards and advanced surveillance to meticulous documentation, strict operational protocols, and thorough employee training, every aspect of the repair business must be geared towards protecting valuable devices and the sensitive data they contain. Frequent Disassembly/Reassembly: Repeated threading and unthreading can wear out plastic threads over time. Schematics and Boardview tools are essential for identifying faulty ICs (Integrated Circuits) on the motherboard. Modern smartphones are miniature powerhouses, packing billions of transistors into incredibly small spaces. By carefully addressing each potential cause, you can significantly increase the chances of achieving a flawless and professional screen installation. By systematically isolating variables and cross-referencing observations, the true source of the charging instability can be identified, leading to an effective resolution and restoring reliable power to your device.4. A schematic diagram uses standardized symbols to represent components like resistors, capacitors, integrated circuits (ICs), and connectors, along with lines indicating the electrical paths between them. Inconsistent Results: Some shots might be stable, others not, suggesting intermittent failure.

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