Hi.
Sounds like some one has been in to the engineers menu of the set & messed up the eeprom settings.
Its not that difficult to correct as long as you have the original tv remote. You will need the service manual for the set which you should be able to download for free here http://www.eserviceinfo.com/index.php?what=search2
Follow the instructions on focus & convergence to the letter. You will only be making adjustments with the remote DO NOT TOUCH THE CRTS or do any physical adjustments all you need is the manual & remote.
Chris
August 2007