Since you mentioned the problem happened just after you moved, there is a good chance that something physical such as a ring around a picture tube neck has slipped.
Generally TV repairmen use gut feeling and trial and error to get the rings re-adjusted reasonably correctly. You can, too, but it is not easy and you have to be careful of high voltages on parts inside the cabinet. If the menu and/or screwdriver adjustments you can reach easily don't do the trick, I guess you may have to call a TV repairman after all.
Do not put a degaussing coil inside the TV cabinet. If the rings around the tube neck(s) are degaussed, they must be replaced to get the convergence right again.
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