In internet ho trovato questo. Non so si applica al tuo TV e non mi prendo nessuna responsabilità di quello che possa succedere al tuo tv...
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So I was instructed on how to do this. I have a Sony Bravia KDL-32P3000 (which should be similar to the U3000 and S3000 as well).
This is how to do a factory reset of your Sony Bravia KDL-32 P/U/S-3000 TV.
PLEASE BE VERY CAREFUL WITH THE SERVICE MENU, YOU CAN EASILY CAUSE YOUR TV TO MAL-FUNCTION!!!! IF YOU FOLLOW THIS GUIDE IT IS AT YOUR OWN RISK!!!
Set your TV in standy (use the green power butten on your remote), RED standby LED is ON on your TV.
Now press these buttons in this order on your remote (pointing to the TV).
i+
5
VOL UP (+)
GREEN POWER button
NOW BE CAREFUL! Dont press any keys just for the fun of it!!! IT MAY DESTROY YOUR TV.
You should now be in the service menu. It will show up as some green letter/numbers spread over the screen (mine are a bit hard to see/a bit faded). In the upper right corner you should have 2 letters TT (two t's).
Now carefully press key 0 and then key 8 on your remote (they should be shown on the screen after the two TT).
Now wait a little while (more than 10 seconds) and your TV should reset with factory settings, just as if you had just brought it home from the TV store.
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