Don't panic! Here is the simple fix to revive your frozen percussive therapy device.
Hold the center power button for 15 seconds to force the internal controller to reboot.
The OLED screen often freezes during bootloader startup, causing the device to enter protection mode.
Microscopic oxidation on the gold-plated contact pins can prevent the battery from delivering sufficient power.
Use electronic-grade contact cleaner and a soft cloth; avoid metal tools to prevent damaging plating.
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