1. Initial symptoms
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Right aid intermittently shut down during normal use.
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When placed in the charger, it would show amber blink → green → then shut off.
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Left aid remained completely normal throughout.
2. Pairing behaviour
On my iPhone (Accessibility → Hearing Devices), I consistently saw:
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LE_L (Left ear Low Energy)
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R‑Unitron Hearing Aid (Bluetooth Classic)
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No LE_R (Right ear Low Energy broadcast missing)
This suggests the right aid was not entering pairing mode even when removed from the charger.
3. Reboot attempts
I tried:
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Hard reboot (15 seconds in charger → remove)
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Extended reboot (2 minutes in charger → remove)
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Cleaning contacts
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Resetting iPhone Bluetooth and network settings
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Restarting iPhone
The right aid never produced the expected green blink sequence after removal.
Left aid always behaved normally.
4. Current state
When placed alone in the charger:
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The right aid shows a solid red LED
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The left aid shows normal solid green
From Unitron/Phonak documentation and user reports, a solid red on a rechargeable typically indicates:
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Internal device error
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Battery controller failure
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Firmware boot failure
The right aid no longer boots, no longer broadcasts BLE, and cannot pair.
5. Request
Has anyone seen this exact failure pattern on Unitron/Phonak rechargeable RICs?
Is this typically:
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A battery module failure
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A charging‑contact issue
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A firmware corruption
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Or a mainboard failure requiring replacement?
Any insights from technicians or experienced users would be appreciated.
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