If there is absolutely no audio coming from the internal speaker in the Navigator, there are two likely options:
You have set the volume level to minimum level
You have switched on the FM Transmitter function
When the FM Transmitter is ON, no sound will come from the internal speaker.
To check / switch off the FM Transmitter function
On HN5A / HN5i
Tap the TOOLS icon from the main menu (the spanner icon in the top left corner)
Tap the FM icon
Make sure FM function is switched OFF
On HN6 and HN7
Tap the TOOLS icon from the main menu (the spanner / Screwdriver icon in between the Street & 4WD icons)
Tap the Tools icon (lower-right)
Tap the FM icon
Make sure the Use FM box is not ticked
As soon as FM mode is switched off, audio should come from the Navigator's internal speaker once again.
NOTE!
HN7
units supplied started with batch number 0914 do NOT include the FM
Transmitter functionality. The batch number is visible within the unit
serial number:
HN7AAU0914001449
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