iPhone 13 Pro Max No Display Repair – Surprising Mainboard Fault Fixed Have you ever been using your iPhone 13 Pro Max when the screen suddenly goes black, yet everything else seems to work fine? In this detailed repair walkthrough, we tackle a no-display fault on a blue, U.S.-version iPhone 13 Pro Max. From the outside, there were no obvious signs of damage, such as severe drops or dents. However, once we powered it on and plugged in a charger, the phone showed charging current and fast charging, yet the screen remained dark. In our first step, we tested the screen itself by attaching a known working display, only to discover that the original screen was not the cause. This pointed us toward a mainboard issue. Removing the mainboard revealed a stacked board design with a mmWave antenna - unique to U.S. variants. Through thorough testing and resistance measurements, we identified a faulty capacitor near the display circuit, which was causing the no-display condition. After removing and replacing this component with a high-voltage capacitor, the fault was resolved, and the phone's display was restored to full functionality. But the process didn't end there. Because the iPhone 13 Pro Max has a dual-layer logic board, we needed to separate the layers using a specialized heating platform, replace the faulty parts, and then carefully re-solder and re-align both layers. We also replaced all protective stickers, applied fresh adhesive for the battery, and cleaned every component before finally reassembling the device in a pink housing. After pressing and securing the screen, the phone powered on successfully with the Apple logo. Our final tests showed working Wi-Fi, baseband, and all essential functions, confirming the repair was a success. Is this sort of faulty capacitor a manufacturer defect or a usage issue? Let us know your thoughts in the comments. We hope this comprehensive repair guide helps you understand more about iPhone internals and how skilled technicians diagnose intricate problems. Your support - whether through likes, comments, shares, or follows - means the world to us!
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