I hate to do this, but this is precisely why I never recommend going into the service menu if you're not a qualified Samsung technician.
Unfortunately, unless you know how to undo exactly what you did, there isn't anything we can do to restore those menu alterations. Unfortunately, there isn't even a firmware update that could restore the settings as a last-chance hail-mary.
At this point, I might suggest calling 800-SAMSUNG, but the unit is likely out of warranty and you may have to pay out of pocket to get the unit working correctly again.
I don't have a blueprint for the default settings, so I just can't be of any help on this.
hi there just bought a second hand samsung as above but colours were out but after playing with the lines on screen accessed via mute 1 8 3 i lined it up ok!!! till............ i couldnt get xbox to work so attempted to alter screen accessed by pressing number 1 and now it is all over the place. can any one help me? is there a service menu or reset or manual to help me rectify it as im really gutted now.
model is sp43h3ht