To access the service menu on a
Hitachi 46W500, turn the tv off then hold down the Input button on the front panel then hold and release the power button.
IMPORTANT!!!!!!!!
Write down the data values before making any changes, that way when you
fubar it you at least have a chance to reset the values to the original.
Also, if you need to get professional service involved, and have told them
what you have done, then they will have a copy of the original data values
to use.
Arrow down to" Rest Factory Settings"
Select with the > button
this will reset to factory lock code of 0000 then go ahead and change to your own lock code.
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