Activate Extended Service Menu in 3 simple steps
3 steeps procedure:
You will need to send custom service IR codes. Use one of available methods:
TV is ON*. Send codes to enter service menu:
Wait for Service Menu screen.
Send code for unlock:
Change locked service menu options.
NB. some explanation: factory+3speed means, you have first send one key (factory) and after this send another (3speed) key.
p.s when TV is OFF, to enter service menu use INFO MENU MUTE POWER keys for EU models or MUTE 1 8 2 POWER for Asia/Pacific/American models.