[SOLVED] I'm looking for Archos 50 Saphir repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my Archos 50 Saphir. 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.

@Benny

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 Archos 50 Saphir 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/is-there-any-way-to-access-home-screen-panels-directly-instead-of-swiping.3195547/
Take a look at comment #925
Also, this : https://www.ifixit.com/Answers/View/827129/It's+on+but+it's+processor+not+responding+to+the+board.
You can also check this video starting from minute 3:

The Archos 50 Saphir 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 Archos 50 Saphir 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 Archos 50 Saphir 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 Archos 50 Saphir 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/757187/How+to+fix+disc+jam

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

The new NAND (even if blank) must be programmed with the unique "syscfg" data (serial number, Wi-Fi/Bluetooth MAC addresses, etc.) of the original device. Case Obstruction: Some bulky or poorly designed phone cases can partially cover the camera lens or interfere with the camera module itself. Check connections, component seating, and potential damage during the initial repair. Replacement Shield: Obtain a new, genuine or high-quality aftermarket shield specific to your phone model. This rewrites the entire operating system and associated modem firmware. Reboot the Smartphone: A simple restart can often clear temporary software glitches that might be preventing the phone from recognizing the SIM card. Eye protection is necessary to guard against accidental splashes of flux or solder. Display issues: The phone is on, but the screen remains black, giving the impression it's off. They dissipate static electricity from your body and tools, preventing damage to sensitive components like ICs. Similarly, test the continuity between the logic board's ground points and the phone's metal chassis to ensure a robust connection. Remove SIM Card Tray: Always remove the SIM card tray before attempting to open the phone, as it can prevent the back cover from being removed. Voice Assistant (sometimes): While usually handled by the primary mic, in some configurations, it might assist with voice commands. Once the display is open, immediately disconnect the battery to prevent electrical damage. Charge the phone immediately after a reset before restoring data or installing apps to see if the problem persists. Buttons: Re-test all physical buttons for functionality (not just feel). These can be accidentally pinched, torn, or improperly reconnected during prior repairs (e.g., battery replacement, screen replacement). Anti-rollback features prevent downgrading to older, potentially vulnerable firmware versions. Even without a visible crack, an impact can damage the internal traces or connections of the digitizer. Select Device/Port: Ensure the software correctly detects and identifies your connected device via its USB port. The programmer will read and display the unique data (e.g., serial number, True Tone data) from the screen's EEPROM chip. Use Tweezers for Stubborn Shards: For smaller, stubborn glass fragments embedded in the frame or stuck in corners: These components are critical for filtering electrical noise, regulating voltage, and preventing power surges from damaging the LEDs or driver IC. An open circuit indicates a broken trace or a faulty series component. Check for Pending Updates: Ensure your device is running the latest official software. Less common, but still indicative, could be a camera that produces extremely blurry or distorted images, not due to focus issues, but because of partial or unstable data transmission resulting from a compromised connection. Light Guide Plate (LGP): A clear acrylic or polycarbonate sheet designed to distribute light evenly across the entire display area. For larger connectors or those with complex pin arrangements, a pre-heater placed underneath the motherboard can help maintain an even temperature, reducing the risk of board warping or component damage. Diagnostic Multimeter: For testing voltage and continuity on the board (advanced diagnostic). Isopropyl Alcohol (Cautious): For corrosion or stubborn residue, a tiny amount of 90%+ isopropyl alcohol applied to a very thin toothpick or an interdental brush can be used, as it evaporates quickly and is non-conductive when wet. Efficient Diagnostics: Creates a historical record for recurring issues or future repairs on the same device.

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