I have just obtained a 29" Panasonic 4:3 TV from my mother to use as a games telly. The picture is very good but could do with some tweaking. (I cant change the colour when using RGB for example) Is there another way to access the service menu on Panasonics other than the usual Bass max, treble Min system. The TV is about 7 years old now, so I dont know if service menus even existed then. Any sugestion would be appreciated.