MENU, 2,4,7,0 gets you into the option menu. Select initialize and press ENTER. This will set all consumer adjustables to OOB condition and refresh the EEPROM. If that does not help, try going to the service menu with MENU, 2,4,5,7 and restore the backup factory data. That will reset all service level data to OOB condition.
None of this will likely help, as the most likey problem is a bad lamp.
None of this will likely help, as the most likey problem is a bad lamp.