Since it is happening on the replacement box as well, it's not the Hr54.
Disconnect the HR54 from your router (wired or wireless) and see what happens.
Do you have any active remote DVR devices?
Since it is happening on the replacement box as well, it's not the Hr54.
Disconnect the HR54 from your router (wired or wireless) and see what happens.
Do you have any active remote DVR devices?