Hello,
For details about indicators on the HG8245H, see ONT Indicators
Generally, the power indicator blinks and the device is being restarted. Please wait for a while. If the voltage is unstable or the connector is in poor contact, select an appropriate component.
Rectify the fault according to the fault symptom. For details, see the preceding link.
If the fault persists, contact the device provider or provide a solution.
Thanks