System time setting from broadcast fails if startup service isn't a broadcast service

If the initial live TV service at startup isn't a broadcast service (specifically, isn't a service that supports the Time Of Day table) and the system has no internet connection, the system time will remain at the system startup default of 00:00:00 1 Jan 1970. An example of a non-broadcast service is the HDMI IN service on the T4.

This will mean that the displayed time on the PVR will be wrong, any recordings that are due won't be made, an the default view of the EPG will be or 1 Jan 1970.

Replication steps

Using a T4...

Set MENU>Setup>System>Time settings>Sync time using to "TV broadcast".

Set the live TV service to HDMI IN.

Shut down the system.

Disconnect the Ethernet cable (or WiFi dongle).

Start up, wait for reboot.

When startup completes, the system time will be shortly after 00:00:00 1 Jan 1970 UTC (10:00:00 1 Jan 1970 in eastern states apart from Tasmania).

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