CTX CVP-5468NI picture increased width then shrank

[Alex KL-1]

BTW: this monitor have S-cap switching for each resolution? And have variable HOT supply (one voltage for each resolution, probably)?

To be sure if for eg. for a higher resolution the supply will need to change (for measuring and avoiding damage). If remains untouched, the PSU have stuck with one single resolution setup (naturally the possibly culprit will be the resolution freq. select already cited here), and image or are shrink with one resolution, or too big with another.