Philips 32PFL9604H - Manual (Page 113)

2.8.7 Clear history
Warning
If you clear the Net TV memory with Clear history, you need
to redo the first use registration when you link up to Net TV
again. If you have registered before, you can restore your
former favourite services and former locks.
Clear history
You can clear the Net TV memory.
To clear the Parental control code, passwords, cookies
and history, press h > Setup > Installation > Clear Net TV
memory.