Watch · Apple
Series 4 (40MM)
Overview of the Apple Watch Series 4 (40MM) The Apple Watch Series 4 (40MM) represented a major structural leap forward when Apple redesigned its smartwatch lineup. Moving away from the older 38mm footprint, the 40mm chassis introduced a noticeably thinner body paired with rounded screen corners and a significantly expanded LTPO OLED Retina display. Despite its larger viewable area, the 40mm case maintained a compact profile that fits comfortably on smaller wrists. Inside, the device houses the dual core S4 System in Package (SiP), an upgraded optical heart rate sensor, an electrical heart se…
DIY guides
Fix this device step by step
Screen Replacement
Apple Series 4 (40MM) Screen Replacement Repair Guide
ADVANCED · ~35 min
Battery Replacement
Apple Series 4 (40MM) Battery Replacement Repair Guide
INTERMEDIATE · ~38 min
Crown Repair
Apple Series 4 (40MM) Crown Repair Repair Guide
INTERMEDIATE · ~51 min
Band Replacement
Apple Series 4 (40MM) Band Replacement Repair Guide
ADVANCED · ~16 min
Water Damage Repair
Apple Series 4 (40MM) Water Damage Repair Repair Guide
ADVANCED · ~78 min
Heart Rate Sensor Repair
Apple Series 4 (40MM) Heart Rate Sensor Repair Repair Guide
ADVANCED · ~48 min
Speaker Repair
Apple Series 4 (40MM) Speaker Repair Repair Guide
INTERMEDIATE · ~46 min
Logic Board Repair
Apple Series 4 (40MM) Logic Board Repair Repair Guide
EXPERT · ~42 min
Force Touch Repair
Apple Series 4 (40MM) Force Touch Repair Repair Guide
INTERMEDIATE · ~38 min
Common problems
Start from the symptom
Apple Watch Will Not Charge
An Apple Watch refusing to charge usually stems from a failing magnetic puck, power block under-voltage, dirty rear sensor glass, or a deeply discharged lithium-ion battery. Here is how to test your charger and isolate hardware failures.
Apple Watch Is Not Charging
An Apple Watch that refuses to charge usually stems from a faulty magnetic puck, dirty rear sensor glass, a depleted battery in deep discharge, or a failed internal charging coil. Here is how to isolate the issue before replacing hardware.
Apple Watch Does Not Charge
If your Apple Watch refuses to charge or stays stuck on a red cable icon, the issue usually stems from a faulty magnetic puck, deep battery discharge, or broken rear glass. Here is how to isolate charger faults from hardware issues.
Apple Watch Do Not Charge
If your Apple Watch refuses to charge, stays stuck on the red snake icon, or overheats on its magnetic puck, the fix could range from a simple software reset to a battery replacement.
Apple Watch Charger Problems
If your Apple Watch refuses to charge, constantly disconnects from the magnetic puck, or stays stuck on the red lightning bolt icon, power delivery issues are usually to blame. Here is how to figure out whether you need a new cable, a settings fix, or a hardware repair.
Apple Watch Charger Not Working
When your Apple Watch stops charging or gets stuck on the red lightning bolt screen, the issue usually stems from an underpowered puck, software crash, or a worn-out battery. Learn how to troubleshoot the charger setup before booking a hardware repair.
Apple Watch Not Charging
If your Apple Watch shows a persistent red lightning bolt, overheats on the charger, or refuses to power up at all, the issue ranges from accessory conflicts to a degraded battery.
Google Pixel Watch Not Turning On
If your Google Pixel Watch screen remains black or unresponsive, don't panic. Learn how to diagnose power delivery issues, perform a hard reset, and determine whether your battery or charger needs attention.
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