[SOLVED] I'm looking for Google Pixel 8 Pro repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my Google Pixel 8 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.

@Lili

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 Google Pixel 8 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://xdaforums.com/t/htc-touch-pro.528375/
Take a look at comment #1606
Also, this : https://www.ifixit.com/Answers/View/620820/Why+does+the+text+at+the+top+of+my+iPhone+screen+turn+big.
You can also check this video starting from minute 1:

The Google Pixel 8 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 Google Pixel 8 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 Google Pixel 8 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 Google Pixel 8 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://xdaforums.com/t/q-galaxy-s-apks-on-the-galaxy-tab-wont-work.890682/

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

These physical buttons or rotational inputs provide tactile feedback and direct control over device functions, from navigating menus to adjusting volume or powering on/off. A flexible LED desk lamp works well, allowing you to angle the light to highlight subtle discolorations. Keep track of all screws, noting their size and location (a magnetic screw mat or labeled diagram is invaluable). Any damage to these files can disrupt the delicate balance required for smooth operation. Reconnect the Flex Cable(s): Carefully snap all the new flex cable connectors back into their respective ports on the logic board. Full Reassembly: If tests are successful, proceed with full reassembly of the phone. Environmental factors, particularly prolonged exposure to very dusty conditions, can exacerbate the problem if the phone's seals are already compromised. If possible, create a small, flat "pad" at the end of the wire by bending it or adding a tiny blob of solder. Charging Port Assembly: If the internal charging port itself (not just debris) is damaged, or the flex cable connecting it to the motherboard is faulty, it will impede current flow. They might be lightly adhered to the frame or have small alignment pins. If it's very low (near 0 ohms, indicating a short), the coil is also faulty. However, sometimes the heat might emanate from a trace leading to the shorted component, or the short might occur under an IC. Using a plastic spudger or opening picks, meticulously scrape away every trace of the old adhesive from both the smartphone frame and the edges of the new screen assembly (if it has residue from manufacturing or pre-installed adhesive strips). In essence, a recovery environment is a separate, lightweight operating system that runs independently of your main Android OS. Before you rush to a repair shop or consider a new phone, a systematic diagnostic approach can often pinpoint and resolve the problem. They allow you to visualize accelerometer graphs, see compass headings, read light intensity values (Lux), and check proximity sensor states. Computer Not Recognizing Phone: The phone might not be recognized by a computer when connected via USB, or it may constantly connect and disconnect. It uses a serial interface (MIPI M-PHY) and supports command queuing, making it much more efficient. This can create a phantom voltage or a short, tricking the audio IC into thinking the mic is active. Deeply discharged battery: While the bench power supply bypasses the battery, a truly dead battery might sometimes affect the PMIC's initial wake-up logic if it's integrated too closely with battery sense lines. Power on and perform a comprehensive test of the touch functionality across the entire screen. Observation: If the noise disappears with a different cable, the original cable is the culprit. It's an exercise in forensic analysis, combining the unambiguous signal of a tripped LCI with the concrete evidence of physical corrosion, water residue, and functional symptoms. The primary symptom of hotspot instability is the inability of connected devices (laptops, tablets, other smartphones) to maintain a consistent internet connection through the host smartphone's hotspot. Bent, broken, or missing pins: Common if the flex cable was inserted incorrectly or forced. Similarly, if you try to pair with a Bluetooth speaker or headset that supports NFC tap-to-pair, the pairing will fail to initiate when the devices are brought close together. Linear Resonant Actuator (LRA) Motor: LRAs are newer, more sophisticated, and typically found in premium smartphones. If the repair exposes raw aluminum and the original frame was anodized and colored (e.g., Space Gray, Gold, Blue), simply polishing it will leave a silver spot. Check Mobile Data: Test mobile data connectivity by browsing a webpage or sending a message. Apply significant, firm, downward pressure while slowly and steadily rotating the screwdriver counter-clockwise.

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