color conversion

[sampson159]

we have a project. i have a stromberg carlson cabinet from 1951.oriental design with carved doors on the front.electronics are long gone.it has a 21" safety glass and we have installed a zenith system 3 set from the mid 90s.it looks very well,however,we would like to access the service menu to reduce the vertical slightly.we can get 2 menus up by using the 9 8 7 6 procedure.we cant seem to get access to the good stuff like the vertical,width,etc.any help is appreciated and we will post pics when done.thanks