[SOLVED] I'm looking for ACER Jive JV24 repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my ACER Jive JV24. 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.

@Asmaa

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 ACER Jive JV24 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/usb-keyboard-mouse-to-bluetooth-adapter-help.4467453/
Take a look at comment #347
Also, this : https://xdaforums.com/t/share-transition-animation-from-ics.2917476/.
You can also check this video starting from minute 9:

The ACER Jive JV24 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 ACER Jive JV24 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 ACER Jive JV24 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 ACER Jive JV24 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/228197/What+is+this+spot+on+my+screen+that+won't+change+or+move

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

Pressure: Sitting on the phone, placing it in a tight pocket, or having heavy objects stacked on it can exert significant bending force. Decide which parts can be effectively repaired, which might require replacement (if available), and what level of restoration is aimed for (e.g., simply clean vs. Sharp Tools: Use hobby knives and razor blades with extreme care to avoid injury or damage. Part Quality: Source your replacement camera module from a reputable supplier. Pentalobe or Torx Screwdriver (if applicable): For external screws on certain models (e.g., iPhone). Throttling Performance: The CPU might slow down significantly to reduce heat generation. This is a very complex BGA IC, often paired with its own power management IC. This is extremely delicate work, as the pins are very fragile and can snap off easily. If pins are bent, very gently try to straighten them with plastic tweezers (extreme caution needed). Prepare the Destination Pad/Trace: If the destination is a test point or a component pad, you might need to scrape off a tiny bit of solder mask to expose bare copper for soldering. Manufacturing Defects: Although rare, faulty assembly or weak components can lead to premature OIS failure. Solder Paste (optional but helpful): Low-temp solder paste can make placement easier. Loose Connectors: If the problem persists, re-check that both ends of the coaxial cable are fully snapped into their sockets. It's good for minor issues but doesn't guarantee a clean OS installation. The "No command" error typically appears when you enter recovery mode, but the system fails to load the recovery menu. Combining both creates excessive heat, which is detrimental to battery health. "Order In, Order Out": The first screw you remove from a section should be the first one you consider for re-installation (in reverse order of removal). Its primary function is to precisely adjust the lens position, allowing the camera to achieve optimal focus on subjects at varying distances. Keep Microphone Ports Clean: Regularly clear debris from microphone holes. Other sensors not working (earpiece, proximity): If these were on the same flex cable as the camera, a faulty replacement or a damaged connection could be the cause. It can also be influenced by the quality of the components used in the power delivery system. Once cured, this excess glue becomes extremely difficult to remove without damaging the phone. We'll start with the simplest and most common solutions, gradually moving to more advanced diagnostics. Always use a plastic spudger to gently lift the connectors straight up from their sockets. If the phone successfully reboots after a force restart, monitor its behavior. Techniques for Removing Screen Residue and Scratches from the Smartphone Mid-Frame It typically has its own dedicated firmware (known as modem firmware) and often its own power management IC (Baseband PMIC) and crystal oscillator for precise timing. Is the screen cracked? Are there any visible signs of internal damage or component stress? If the screen is already cracked or if the bend is extreme (more than a few millimeters), the risk of further damage increases significantly. Others open from the front by removing the display assembly (e.g., older iPhones, some Android models). PMIC (Power Management IC) Diagnosis: The PMIC generates all secondary power rails.

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