When receiving a device for repair, it is crucial to conduct a thorough visual inspection to determine any external damages that could help identify the cause of malfunction. Service centers typically use microscopes or high-resolution cameras with quality optics and table lamps with built-in magnifying glass to aid in visual inspections.
Before disassembling the mobile device, it's advisable to conduct a visual overview to identify possible causes of malfunction, such as drops, moisture, software malfunction, or hardware failure due to faulty components on the base board or peripheral parts such as the LCD, dash panel, speaker, microphone, or USB interface. Microscopes and high-resolution cameras are essential tools for inspecting the small parts of the device, which may not be visible to the naked eye.
Moisture damage is a common issue, which can cause oxidation and interfere with the device's functionality. It's essential to use a microscope with strong light and magnification to detect any signs of water damage, as water can penetrate the smallest parts of the device and get underneath the SMD or BGA components.
While there are many optical devices available in the market, it's recommended to invest in high-quality microscopes and cameras for better results. Cheaper options are available for amateur or casual use, but for professional purposes, it's better to use top-quality optics from renowned manufacturers like NIKON, LEICA, ZEISS, VISION ENGINEERING, among others. The quality of optics is crucial, and by using such devices, you can protect your eyesight, which is of the utmost importance in this kind of work.
