Philips 32PFL9604H - Manual (Page 94)

2.4.3 LoungeLight
When the TV is on standby, you can switch Ambilight on
and create an Ambilight LoungeLight effect in your room.
To switch Ambilight on while the TV is on standby, press
Ambilight on the remote control.
To change the LoungeLight colour scheme, press
Ambilight for 3 seconds.