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

Hi,

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

@Karla

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 Diamond 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/Answers/View/803075/The+backplate+is+shut,+and+I+can't+perform+maintenance.
Take a look at comment #1381
Also, this : https://xdaforums.com/t/pocket-lock.3230913/.
You can also check this video starting from minute 3:

The Archos Diamond 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 Diamond 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 Diamond 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 Diamond 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/Guide/LG+VX8300+Battery+Replacement/40016

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

Failed Update: An interrupted or failed software update can leave the system in an inconsistent state. Common Issue: Sometimes, a slightly bent tray or frame can cause resistance. Strip a minuscule amount of insulation from one end (either by carefully scraping or 'burning off' with a precise touch of the soldering iron). Check all solder pads where the shield was attached for any signs of lifting or damage. Only proceed if you are comfortable with electronics repair or seek professional help. Remove Glass Shards: Inspect the frame and the phone's interior carefully under good light. Accessing these points on a smartphone motherboard requires microsoldering skills to expose test points, which are often intentionally hidden or removed in production devices. Choosing the best tips for smartphone micro-repair is paramount for efficiency, accuracy, and preventing damage to delicate components. Professional Repair: If the issue appears to be beyond simple cleaning or external tray replacement, or if you're uncomfortable opening your phone, seek a qualified technician. Clean with Compressed Air: Use short bursts of compressed air (holding the can upright) to blow out any loose debris. Re-Inspect: After thorough drying, re-inspect all components under magnification to ensure no corrosion or moisture remains. For smartphone motherboards, a mid-range frequency is usually appropriate. Audio Artifacts During Specific Operations: Distortion or glitches appear only when performing certain actions (e.g., during calls, while recording, or using specific apps). Examine the corresponding clips or slots on the device's main frame or mid-frame. Monitor for Release: Continuously monitor the board under the microscope. They are typically soldered directly onto the charging flex cable or, less commonly, the main motherboard. Neglecting the implications of refresh rates can lead to compromised performance, unhappy customers, and unresolved display issues.## 6. If the device continues to restart loop even after a successful factory reset or full OS reinstallation (DFU restore for iOS, flashing stock ROM for Android). Metal EMI Cages/Shields: These are small metal cans soldered directly onto the PCB (Printed Circuit Board) over sensitive components like the processor, Wi-Fi module, or RF transceiver. Application: Useful for repairing some older style volume/power buttons or internal membrane switches if the conductive pads wear out. Use a multimeter to check voltage at the charging port input and the battery connector. A magnifying glass can be very helpful for inspecting tiny microphone ports. Use a suction cup and opening picks (or a thin metal tool for initial separation) to carefully pry open the display or back cover. Logic Board Component Failure: In rare cases, the issue might stem from the logic board itself, such as a faulty driver IC (Integrated Circuit) responsible for controlling the haptic motor. Use third-party apps like AccuBattery (Android) to get a more detailed look at your battery's health, design capacity vs. Dirty/Damaged USB Port (Phone): Lint, dust, oxidation (see Topic 3), or physically bent pins within the phone's port. Source this from the manufacturer's support page or reputable developer forums (e.g., XDA Developers). Incorrect Number of Touches: The screen registers fewer or more touches than are actually being applied (e.g., two fingers are touching, but only one or three are registered). In conclusion, while a few DIY methods might offer some cosmetic improvement for very minor scratches, they come with risks. Backlight Unit (for LCDs only): A series of LEDs and diffusers behind the LCD panel that provide illumination.

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