FRSKY HORUS X10S EXPRESS Charging Circuit Failure
| CONF | DIAGNOSIS | PART MATCH | ACTION |
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92%
CONF
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Internal USB Charging Board / PMU Module
The X10S Express relies on an internal PCB that manages the 5V-to-8.4V boost conversion and cell balancing for the 2S Li-ion pack. This board frequently fails due to thermal fatigue of the boost inductor or voltage regulation ICs during high-current charging cycles. Replacing this board restores the necessary voltage elevation and balancing logic required for the battery to accept a charge.
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8%
CONF
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Secondary Circuit / Wiring Check
Inspect wiring harness.
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DIY Repair Guide
Watch exactly how to replace the Internal USB Charging Board / PMU Module.